{"id":43633,"date":"2023-03-18T02:55:45","date_gmt":"2023-03-17T17:55:45","guid":{"rendered":"https:\/\/kinsta.com\/jp\/?p=43633&#038;preview=true&#038;preview_id=43633"},"modified":"2023-08-29T08:09:44","modified_gmt":"2023-08-28T23:09:44","slug":"core-web-vitals","status":"publish","type":"post","link":"https:\/\/kinsta.com\/jp\/blog\/core-web-vitals\/","title":{"rendered":"Core Web Vitals\u306b\u5bfe\u5fdc\u3057\u305f\u6700\u9069\u5316\u3068\u6539\u5584\u65b9\u6cd5"},"content":{"rendered":"<p>Google\u306f\u3001Core Web Vitals\u306b\u5f93\u3063\u305f\u30a6\u30a7\u30d6\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5411\u4e0a\u3092\u63a8\u5968\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u7406\u7531\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u3001Google\u306f\u4e3b\u306b\u30a6\u30a7\u30d6\u30d9\u30fc\u30b9\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u305f\u3081\u3002\u4f4e\u901f\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3084\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u30e6\u30fc\u30b6\u30fc\u306b\u656c\u9060\u3055\u308c\u3001\u30cd\u30a4\u30c6\u30a3\u30d6\u30a2\u30d7\u30ea\u306e\u4f7f\u7528\u3092\u4fc3\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>Google\u691c\u7d22\u3067\u306e\u30da\u30fc\u30b8\u306e\u8868\u793a\u9806\u4f4d\u306f\u3001\u691c\u7d22\u30ad\u30fc\u30ef\u30fc\u30c9\u3001\u30da\u30fc\u30b8\u5185\u3067\u306e\u30ad\u30fc\u30ef\u30fc\u30c9\u306e\u4f7f\u7528\u3001\u4ed6\u304b\u3089\u306e\u30ea\u30f3\u30af\u306e\u6570\uff08\u3068\u8cea\uff09\u306a\u3069\u306e\u6307\u6a19\u306b\u3088\u3063\u3066\u5927\u304d\u304f\u5de6\u53f3\u3055\u308c\u307e\u3059\u30022021\u5e748\u6708\u4ee5\u964d\u3001Google\u306f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u57fa\u3065\u3044\u3066\u30da\u30fc\u30b8\u3092\u8a55\u4fa1\u3059\u308b\u53d6\u308a\u7d44\u307f\u3082\u63a8\u9032\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001Google\u306eCore Web Vitals\u306e\u6307\u6a19\u3067\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3092\u6700\u9069\u5316\u3059\u308b\u65b9\u6cd5\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<div><\/div><kinsta-auto-toc heading=\"Table of Contents\" exclude=\"last\" list-style=\"arrow\" selector=\"h2\" count-number=\"-1\"><\/kinsta-auto-toc>\n<h2>Core Web Vitals\u306e\u91cd\u8981\u6027<\/h2>\n<p>\u3082\u3061\u308d\u3093\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u91cd\u8981\u3067\u3042\u308b\u3053\u3068\u306b\u5909\u308f\u308a\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u985e\u4f3c\u306e\u30c6\u30ad\u30b9\u30c8\u3068\u4eba\u6c17\u3092\u6301\u30642\u3064\u306e\u30b5\u30a4\u30c8\u3092\u6bd4\u8f03\u3057\u305f\u5834\u5408\u3001\u3088\u308a\u30a6\u30a7\u30d6\u4f53\u9a13\u304c\u512a\u308c\u3066\u3044\u308b\u65b9\u304c\u3001Google\u691c\u7d22\u3067\u3088\u308a\u4e0a\u4f4d\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u8868\u793a\u9806\u4f4d\u306e\u5411\u4e0a\u3060\u3051\u3067\u306a\u304f\u3001\u9ad8\u6027\u80fd\u306a\u30b5\u30a4\u30c8\u306f\u30e2\u30d0\u30a4\u30eb\u691c\u7d22\u3067\u30ab\u30eb\u30fc\u30bb\u30eb\uff08\u753b\u9762\u4e0a\u90e8\u3067\u5de6\u53f3\u306b\u30b9\u30ef\u30a4\u30d7\u3067\u304d\u308b\u4ed5\u69d8\u306e\u30ea\u30c3\u30c1\u30ea\u30b6\u30eb\u30c8\uff09\u63b2\u8f09\u5bfe\u8c61\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u6a5f\u80fd\u306f\u3001\u5f53\u521d\u306f\u30e2\u30d0\u30a4\u30eb\u7aef\u672b\u3067\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u3092\u9ad8\u901f\u8868\u793a\u3059\u308b\u624b\u6cd5\u3067\u3042\u308b<a href=\"https:\/\/kinsta.com\/blog\/google-amp\/\">Accelerated Mobile Pages\uff08AMP\uff09<\/a>\u306e\u305f\u3081\u306e\u3082\u306e\u3067\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u3092Google\u306e\u4ed5\u69d8\u306b\u3042\u308f\u305b\u3066\u5909\u63db\u3059\u308b\u3001\u307e\u305f\u306f\u4f5c\u308a\u76f4\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u307e\u305f\u3001\u7279\u306b\u6700\u9069\u5316\u3055\u308c\u305fWordPress\u30b5\u30a4\u30c8\u3084\u9759\u7684\u30b5\u30a4\u30c8\u3088\u308a\u3082\u5fc5\u305a\u3057\u3082\u9ad8\u901f\u3067\u3042\u308b\u3068\u306f\u9650\u3089\u306a\u3044\u306a\u3069\u306e\u7406\u7531\u304b\u3089\u3001\u4e00\u90e8\u6279\u5224\u306e\u5bfe\u8c61\u306b\u3082\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u306e\u3088\u3046\u306a\u7406\u7531\u304b\u3089\u3001APM\u306e\u5c0e\u5165\u306f\u73fe\u5728\u306f<a href=\"https:\/\/developers.google.com\/search\/blog\/2021\/04\/more-details-page-experience\">\u5fc5\u9808\u6761\u4ef6\u3067\u306f\u3042\u308a\u307e\u305b\u3093<\/a>\u3002<\/p>\n<p>\u3044\u305a\u308c\u306b\u3057\u3066\u3082\u3001\u3088\u308a\u9ad8\u901f\u3067\u3001\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u306a\u30b5\u30a4\u30c8\u3067\u3042\u308b\u307b\u3069\u3001Google\u306e\u691c\u7d22\u7d50\u679c\u3067\u4e0a\u4f4d\u306b\u8868\u793a\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u5e73\u5747\u7684\u306a\u30da\u30fc\u30b8\u30b5\u30a4\u30ba\u304c\u7d042MB\u3001\u305d\u3057\u306660\u56de\u4ee5\u4e0a\u306eHTTP\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u884c\u3044\u3001\u30e2\u30d0\u30a4\u30eb\u7aef\u672b\u3067\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u304c\u5b8c\u4e86\u3059\u308b\u306e\u306b16\u79d2\u304b\u304b\u308b\u3053\u3068\u3092\u8003\u3048\u308c\u3070\u3001\u3042\u306a\u305f\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306b\u3082\u6539\u5584\u306e\u4f59\u5730\u304c\u3042\u308b\u3053\u3068\u306f\u304a\u5206\u304b\u308a\u306b\u306a\u308b\u306f\u305a\u3002\u5f8c\u307b\u3069\u3054\u7d39\u4ecb\u3059\u308b\u6700\u9069\u5316\u306e\u65b9\u6cd5\u3092\u305c\u3072\u5b9f\u8df5\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2>Google\u306e\u691c\u7d22\u9806\u4f4d\u306b\u5f71\u97ff\u3059\u308b\u4e3b\u306a\u8981\u56e0<\/h2>\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u8a55\u4fa1\u3092\u59cb\u3081\u308b\u524d\u306b\u3001Google\u306e\u691c\u7d22\u9806\u4f4d\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u91cd\u8981\u306a\u8981\u7d20\u3092\u62bc\u3055\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<ol>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/http-to-https\/\"><strong>HTTPS<\/strong><\/a>\uff1a\u8a2a\u554f\u8005\u306e\u30d6\u30e9\u30a6\u30b6\u3068\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u3068\u306e\u9593\u3067\u5b89\u5168\u306a\u63a5\u7d9a\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u306f\u4e0d\u53ef\u6b20\u3002<\/li>\n<li><strong>\u30e2\u30d0\u30a4\u30eb\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc<\/strong>\uff1a\u30e2\u30d0\u30a4\u30eb\u7aef\u672b\u3067\u5feb\u9069\u306b\u52d5\u4f5c\u3059\u308b\u3053\u3068\u3002\u307e\u305f\u3001\u5c0f\u3055\u306a\u753b\u9762\u306e\u7aef\u672b\u3067\u3082\u554f\u984c\u306a\u304f\u5229\u7528\u3067\u304d\u308b\u304b\u3002\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u306f\u307f\u51fa\u3057\u305f\u308a\u305b\u305a\u306b\u6b63\u3057\u304f\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u308b\u304b\u3002\u30d5\u30a9\u30f3\u30c8\u30b5\u30a4\u30ba\u306f\u5c0f\u3055\u3059\u304e\u306a\u3044\u304b\u3002\u30af\u30ea\u30c3\u30af\u8981\u7d20\u306f\u554f\u984c\u306a\u304f\u30bf\u30c3\u30d7\u3067\u304d\u308b\u304b\u3002<\/li>\n<li><strong>\u30a4\u30f3\u30bf\u30fc\u30b9\u30c6\u30a3\u30b7\u30e3\u30eb\u3092\u4f7f\u7528\u3057\u306a\u3044<\/strong>\uff1a\u30a4\u30f3\u30bf\u30fc\u30b9\u30c6\u30a3\u30b7\u30e3\u30eb\u3068\u306f\u3001\u30da\u30fc\u30b8\u9593\u306e\u79fb\u52d5\u306e\u5408\u9593\u306a\u3069\u306b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u8868\u793a\u3055\u308c\u308b\u5e83\u544a\u3002\u753b\u9762\u5360\u6709\u7387\u304c\u9ad8\u3044\u305f\u3081\u56de\u907f\u3059\u308b\u3053\u3068\u3002\u307e\u305f\u95a2\u9023\u3057\u3066\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u306f\u5e38\u306b\u8aad\u307f\u3084\u3059\u3044\u304b\u3069\u3046\u304b\u3002\u30dd\u30c3\u30d7\u30a2\u30c3\u30d7\u5f62\u5f0f\u306e\u30a4\u30f3\u30bf\u30fc\u30b9\u30c6\u30a3\u30b7\u30e3\u30eb\u3084\u30d0\u30ca\u30fc\u3067\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u90e8\u5206\u7684\u306b\u898b\u3048\u306b\u304f\u304f\u306a\u3063\u305f\u308a\u3057\u306a\u3044\u304b\u3002\u5e83\u544a\u3084\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30e2\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u3063\u3066\u30b5\u30a4\u30c8\u306e\u64cd\u4f5c\u6027\u304c\u843d\u3061\u3066\u3044\u306a\u3044\u304b\u3002<\/li>\n<li><strong>\u5b89\u5168\u6027<\/strong>\uff1a<a href=\"https:\/\/kinsta.com\/jp\/blog\/the-site-ahead-contains-malware\/\">\u30de\u30eb\u30a6\u30a7\u30a2<\/a>\u3001\u30a6\u30a4\u30eb\u30b9\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u3001\u8a50\u6b3a\u306a\u3069\u306e\u8106\u5f31\u6027\u304c\u306a\u3044\u304b\u3002<\/li>\n<\/ol>\n<p>\u4e0a\u8a18\u306e\u8981\u56e0\u3092\u6e80\u305f\u3057\u3066\u521d\u3081\u3066\u3001\u30b5\u30a4\u30c8\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u8a55\u4fa1\u3055\u308c\u307e\u3059\u3002<\/p>\n\n<h2>Google\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8a55\u4fa1<\/h2>\n<p><a href=\"https:\/\/kinsta.com\/jp\/learn\/speed-up-wordpress\/\">\u30b5\u30a4\u30c8\u901f\u5ea6\u3092\u9ad8\u901f\u5316<\/a>\u3057\u3001\u7d20\u65e9\u304f\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u884c\u3044\u3001\u30b5\u30a4\u30c8\u306e\u5fdc\u7b54\u6027\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u304c\u3001\u5b9f\u969b\u306b\u30e6\u30fc\u30b6\u30fc\u5074\u3067\u305d\u308c\u3092\u4f53\u611f\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u30d6\u30e9\u30a6\u30b6\u306e\u958b\u767a\u8005\u30c4\u30fc\u30eb\u306e\u3088\u3046\u306a<a href=\"https:\/\/kinsta.com\/jp\/blog\/performance-testing-tools\/\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6e2c\u5b9a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/a>\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u8981\u7d20\u3092\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<ol>\n<li><strong>\u30d6\u30ed\u30c3\u30af\u6642\u9593<\/strong>\u2500\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u958b\u59cb\u307e\u3067\u306e\u5f85\u3061\u6642\u9593\uff08\u30b9\u30bf\u30a4\u30eb\u30b7\u30fc\u30c8\u3084\u30b9\u30af\u30ea\u30d7\u30c8\u306a\u3069\u3001\u4ed6\u306e\u30a2\u30bb\u30c3\u30c8\u306e\u65b9\u304c\u512a\u5148\u5ea6\u304c\u9ad8\u3044\u5834\u5408\u306b\u767a\u751f\uff09<\/li>\n<li><strong>DNS\u3067\u306e\u540d\u524d\u89e3\u6c7a<\/strong>\u2500\u30a2\u30bb\u30c3\u30c8\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u3001\u30c9\u30e1\u30a4\u30f3\u304b\u3089IP\u30a2\u30c9\u30ec\u30b9\u3078\u5909\u63db\uff08\u89e3\u6c7a\uff09\u3059\u308b\u6642\u9593<\/li>\n<li><strong>\u63a5\u7d9a\u6642\u9593<\/strong>\u2500TCP\u63a5\u7d9a\u3092\u958b\u59cb\u3059\u308b\u307e\u3067\u306e\u6642\u9593<\/li>\n<li><strong>TTFB\uff08Time to First Byte\uff09<\/strong>\u2500\u30ea\u30af\u30a8\u30b9\u30c8\u304b\u3089\u30ec\u30b9\u30dd\u30f3\u30b9\u306e1\u30d0\u30a4\u30c8\u3092\u53d7\u4fe1\u3059\u308b\u306e\u306b\u304b\u304b\u308b\u6642\u9593<\/li>\n<li><strong>\u53d7\u4fe1\u6642\u9593<\/strong>\u2500\u30a2\u30bb\u30c3\u30c8\u5168\u4f53\u3092\u53d6\u5f97\u3059\u308b\u307e\u3067\u306e\u6642\u9593<\/li>\n<li><strong>DOM\u306e\u8aad\u307f\u8fbc\u6642\u9593<\/strong>\u2500HTML\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30e2\u30c7\u30eb\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3001\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u6642\u9593\uff08\u901a\u5e38\u3001DOM\u3092\u89e3\u6790\u307e\u305f\u306f\u5909\u66f4\u3059\u308b\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u78ba\u5b9f\u306b\u5b9f\u884c\u3067\u304d\u308b\u6700\u521d\u306e\u30dd\u30a4\u30f3\u30c8\uff09<\/li>\n<li><strong>\u30da\u30fc\u30b8\u8aad\u307f\u8fbc\u307f\u6642\u9593<\/strong>\u2500\u30da\u30fc\u30b8\u3068\u753b\u50cf\u3001\u30b9\u30bf\u30a4\u30eb\u30b7\u30fc\u30c8\u3001\u30b9\u30af\u30ea\u30d7\u30c8\u306a\u3069\u306e\u3059\u3079\u3066\u306e\u30a2\u30bb\u30c3\u30c8\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u306e\u306b\u304b\u304b\u308b\u6642\u9593<\/li>\n<li><strong>\u30da\u30fc\u30b8\u306e\u7dcf\u91cf<\/strong>\u2500\u3059\u3079\u3066\u306e\u30a2\u30bb\u30c3\u30c8\u306e\u5408\u8a08\u30b5\u30a4\u30ba\uff08\u4e00\u822c\u7684\u306b\u306f\u5727\u7e2e\u2500\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u2500\u30b5\u30a4\u30ba\u3068\u975e\u5727\u7e2e\u30b5\u30a4\u30ba\u306e\u4e21\u65b9\u3067\u5831\u544a\u3055\u308c\u308b\uff09<\/li>\n<li><strong>DOM\u306e\u8981\u7d20\u6570<\/strong>\u2500\u30da\u30fc\u30b8\u4e0a\u306e<a href=\"https:\/\/kinsta.com\/blog\/html-best-practices\/\">HTML\u8981\u7d20<\/a>\u306e\u7dcf\u6570\uff08\u8981\u7d20\u304c\u591a\u3044\u307b\u3069\u3001\u30da\u30fc\u30b8\u306e\u51e6\u7406\u306b\u304b\u304b\u308b\u6642\u9593\u304c\u9577\u3044\uff09<\/li>\n<li><strong>First Contentful Paint\uff08FCP\uff09<\/strong>\u2500\u30d6\u30e9\u30a6\u30b6\u304c\u6700\u521d\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u8868\u793a\u3059\u308b\u307e\u3067\u306b\u304b\u304b\u308b\u6642\u9593<\/li>\n<li><strong>FMP\uff08First Meaningful Paint\uff09<\/strong>\u2500\u30da\u30fc\u30b8\u306e\u4e3b\u8981\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u30e6\u30fc\u30b6\u30fc\u306b\u8868\u793a\u3055\u308c\u308b\u307e\u3067\u306e\u6642\u9593<\/li>\n<li><strong>TTI\uff08Time To Interactive\uff09<\/strong>\u2500\u30da\u30fc\u30b8\u304c\u5b8c\u5168\u306b\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u306b\u306a\u308a\u3001\u5165\u529b\u64cd\u4f5c\u306b\u78ba\u5b9f\u306b\u5fdc\u7b54\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u307e\u3067\u306e\u6642\u9593<\/li>\n<li><strong>First CPU Idle\uff08FCI\uff09<\/strong>\u2500CPU\u304c\u30da\u30fc\u30b8\u3092\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3057\u3001\u3059\u3079\u3066\u306e\u521d\u671f\u5316\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u5b9f\u884c\u3057\u3066\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u5165\u529b\u64cd\u4f5c\u304c\u53ef\u80fd\u306a\u30a2\u30a4\u30c9\u30eb\u72b6\u614b\u306b\u306a\u308b\u307e\u3067\u306e\u6642\u9593<\/li>\n<li><strong>CPU\u4f7f\u7528\u7387<\/strong>\u2500\u30da\u30fc\u30b8\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3068\u30e6\u30fc\u30b6\u30fc\u306e\u5165\u529b\u64cd\u4f5c\u306b\u5fdc\u7b54\u3059\u308b\u969b\u306b\u4f7f\u7528\u3055\u308c\u305fCPU\u306e\u5272\u5408<\/li>\n<li><strong>1\u79d2\u3042\u305f\u308a\u306e\u30ec\u30a4\u30a2\u30a6\u30c8<\/strong>\u2500\u30d6\u30e9\u30a6\u30b6\u304c\u30b9\u30bf\u30a4\u30eb\u3068\u30da\u30fc\u30b8\u30ec\u30a4\u30a2\u30a6\u30c8\u3092\u518d\u8a08\u7b97\u3059\u308b\u901f\u5ea6<\/li>\n<\/ol>\n<p>\u4e0a\u8a18\u306e\u6307\u6a19\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u8ca0\u8377\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/wordpress-caching-plugins\/\">CMS\u306e\u30ad\u30e3\u30c3\u30b7\u30e5<\/a>\u3001\u30d6\u30e9\u30a6\u30b6\u30ad\u30e3\u30c3\u30b7\u30e5\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u901f\u5ea6\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/what-is-javascript\/\">JavaScript<\/a>\u306e\u52b9\u7387\u306a\u3069\u3001\u7279\u5b9a\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u7279\u5b9a\u3059\u308b\u306e\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7406\u7531\u304b\u3089\u3001\u5b9f\u969b\u306e\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u8a55\u4fa1\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<ul>\n<li>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3084\u8868\u793a\u304c\u65e9\u304f\u3066\u3082\u3001\u6700\u9069\u5316\u3055\u308c\u3066\u3044\u306a\u3044JavaScript\u30b3\u30fc\u30c9\u304c\u5927\u91cf\u306b\u5b9f\u884c\u3055\u308c\u308b\u3053\u3068\u306a\u3069\u304c\u539f\u56e0\u3067\u3001\u6700\u521d\u306e\u64cd\u4f5c\u3067\u5fdc\u7b54\u3057\u306a\u304f\u306a\u308b\u3053\u3068\u304c\u3042\u308b\u3002<\/li>\n<li>\u30c1\u30e3\u30c3\u30c8\u30a2\u30d7\u30ea\u3067\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3059\u308b\u305f\u3073\u306b\u30c7\u30fc\u30bf\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u7d9a\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u3053\u308c\u306b\u3088\u3063\u3066\u3001\u8a55\u4fa1\u30c4\u30fc\u30eb\u3067\u306f\u3001\u30da\u30fc\u30b8\u304c\u5fdc\u7b54\u3057\u3066\u3044\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u8aad\u307f\u8fbc\u307f\u304c\u5b8c\u4e86\u3057\u306a\u304b\u3063\u305f\u3068\u5224\u65ad\u3055\u308c\u308b\u3053\u3068\u3082\u3002<\/li>\n<\/ul>\n<p>\u3053\u306e\u3088\u3046\u306a\u8ab2\u984c\u3092\u89e3\u6c7a\u3059\u3079\u304f\u3001Google\u304c\u63d0\u5531\u3057\u59cb\u3081\u305f\u306e\u304cWeb Core Vitals\u3067\u3059\u3002<\/p>\n<h2>Core Web Vitals\u3068\u306f<\/h2>\n<p>Google\u306eCore Web Vitals\uff08CWV\uff09\u306f\u3001\u5b9f\u969b\u306e\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u3092\u8a55\u4fa1\u3059\u308b3\u3064\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6307\u6a19\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>LCP\uff08Largest Contentful Paint\uff09<\/strong>\u2500\u8aad\u307f\u8fbc\u307f\u6642\u9593\u3092\u6e2c\u308b\u6307\u6a19<\/li>\n<li><strong>FID\uff08First Input Delay\uff09<\/strong>\u2500\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u6027\u3092\u6e2c\u308b\u6307\u6a19<\/li>\n<li><strong>CLS<\/strong><strong>\uff08Cumulative Layout Shift\uff09<\/strong>\u2500\u8996\u899a\u7684\u306a\u5b89\u5b9a\u6027\u3092\u6e2c\u308b\u6307\u6a19<\/li>\n<\/ul>\n<p>\u3053\u306e\u672a\u3060\u6bd4\u8f03\u7684\u65b0\u3057\u3044<a href=\"https:\/\/kinsta.com\/jp\/blog\/decline-seo-rankings\/\">Google\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u66f4\u65b0<\/a>\u306f\u30012021\u5e748\u6708\u672b\u4ee5\u964d\u3001\u5168\u4e16\u754c\u3067\u5c55\u958b\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u6700\u521d\u306f\u30e2\u30d0\u30a4\u30eb\u691c\u7d22\u306b\u5c0e\u5165\u3055\u308c\u305f\u6307\u6a19\u3067\u3057\u305f\u304c\u3001\u5f8c\u306bPC\u691c\u7d22\u306b\u3082\u5c0e\u5165\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30da\u30fc\u30b8\u306eLCP\u3001FID\u3001CLS\u30b9\u30b3\u30a2\u306f\u3001Chrome\u30d6\u30e9\u30a6\u30b6\u3092\u901a\u3058\u3066\u533f\u540d\u3067\u53ce\u96c6\u3055\u308c\u305f\u904e\u53bb28\u65e5\u9593\u306e\u5b9f\u969b\u306e\u30e6\u30fc\u30b6\u30fc\u6e2c\u5b9a\u5024\u306b\u57fa\u3065\u3044\u3066\u6c7a\u307e\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u3053\u306e\u6e2c\u5b9a\u5024\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u30c7\u30d0\u30a4\u30b9\u3001\u63a5\u7d9a\u3001\u305d\u306e\u4ed6\u306e\u540c\u6642\u52d5\u4f5c\u306b\u3088\u3063\u3066\u5909\u5316\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u5e73\u5747\u5024\u3067\u306f\u306a\u304f75\u30d1\u30fc\u30bb\u30f3\u30bf\u30a4\u30eb\uff08\u5c0f\u3055\u3044\u65b9\u304b\u3089\u6570\u3048\u3066\u4efb\u610f\u306e%\u306b\u4f4d\u7f6e\u3059\u308b\u5024\uff09\u304c\u7b97\u51fa\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3064\u307e\u308a\u3001\u5168\u30e6\u30fc\u30b6\u30fc\u306e\u6307\u6a19\u3092\u826f\u3044\u3082\u306e\u304b\u3089\u9806\u306b\u4e26\u3079\u66ff\u3048\u30014\u5206\u306e3\u5730\u70b9\u306e\u6570\u5024\u3092\u53d6\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u3063\u3066\u3001\u30b5\u30a4\u30c8\u8a2a\u554f\u8005\u306e4\u4eba\u4e2d3\u4eba\u306f\u3001\u305d\u306e\u6570\u5024\u4ee5\u4e0a\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u4f53\u9a13\u3057\u3066\u3044\u308b\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>Core Web Vitals\u306e3\u3064\u306e\u6307\u6a19\u3067\u3059\u3079\u3066\u826f\u597d\uff08\u7dd1\u8272\uff09\u30b9\u30b3\u30a2\u3092\u9054\u6210\u3057\u305f\u30da\u30fc\u30b8\u306f\u3001\u691c\u7d22\u7d50\u679c\u3067\u4e0a\u4f4d\u306b\u8868\u793a\u3055\u308c\u3001Google \u30cb\u30e5\u30fc\u30b9\u306e\u300c\u30c8\u30c3\u30d7\u30b9\u30c8\u30fc\u30ea\u30fc\u300d\u30ab\u30eb\u30fc\u30bb\u30eb\u306b\u8868\u793a\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>Core Web Vitals\u306e\u6982\u8981\u3092\u62bc\u3055\u3048\u305f\u3068\u3053\u308d\u3067\u3001\u3053\u3053\u304b\u3089\u306f\u3001\u6307\u6a19\u30b9\u30b3\u30a2\u306e\u8a08\u7b97\u306b\u4f7f\u7528\u3055\u308c\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3001\u30da\u30fc\u30b8\u306e\u30b9\u30b3\u30a2\u3092\u7279\u5b9a\u3059\u308b\u305f\u3081\u306e\u30c4\u30fc\u30eb\u3001\u30b9\u30b3\u30a2\u304c\u4f4e\u4e0b\u3059\u308b\u4e3b\u306a\u539f\u56e0\u3001\u304a\u3088\u3073\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3054\u8aac\u660e\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h2>Largest Contentful Paint\uff08LCP\uff09<\/h2>\n<p>Largest Contentful Paint\uff08\u65e5\u672c\u8a9e\u3067\u300c\u6700\u5927\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u63cf\u753b\u300d\uff09\u3068\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/learn\/page-speed\/\">\u8aad\u307f\u8fbc\u307f\u6642\u9593<\/a>\u3092\u6e2c\u5b9a\u3057\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u4f7f\u7528\u53ef\u80fd\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u3069\u308c\u3060\u3051\u7d20\u65e9\u304f\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u308b\u304b\u3092\u8abf\u3079\u307e\u3059\u3002<\/p>\n<p>\u30d6\u30e9\u30a6\u30b6\u306e\u30d3\u30e5\u30fc\u30dd\u30fc\u30c8\u5185\uff08Above the fold\u307e\u305f\u306f\u30d5\u30a1\u30fc\u30b9\u30c8\u30d3\u30e5\u30fc\u3068\u3082\uff09\u3067\u6700\u5927\u30b5\u30a4\u30ba\u306e\u753b\u50cf\u3084\u30c6\u30ad\u30b9\u30c8\u30d6\u30ed\u30c3\u30af\u304c\u8868\u793a\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308b\u307e\u3067\u306e\u6642\u9593\u3092\u5206\u6790\u3057\u307e\u3059\u3002\u6700\u5927\u30b3\u30f3\u30c6\u30f3\u30c4\u3068\u306f\u3001\u30d2\u30fc\u30ed\u30fc\u753b\u50cf\u3001\u30d0\u30ca\u30fc\u3001\u898b\u51fa\u3057\u3001\u307e\u305f\u306f\u5927\u304d\u306a\u30c6\u30ad\u30b9\u30c8\u30d6\u30ed\u30c3\u30af\u306a\u3069\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306e\u3044\u305a\u308c\u304b\u306e\u8981\u7d20\u304cLCP\u306e\u89e3\u6790\u5bfe\u8c61\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u753b\u50cf\uff08<code>&lt;img&gt;<\/code> \u8981\u7d20\uff09<\/li>\n<li>SVG\uff08Scalable Vector Graphics\uff09\u5185\u306e\u753b\u50cf\uff08<code>&lt;image&gt;<\/code>\u3092<code>&lt;svg&gt;<\/code> \u306b\u57cb\u3081\u8fbc\u3093\u3060\u3082\u306e\uff09<\/li>\n<li>\u52d5\u753b\u306e\u30b5\u30e0\u30cd\u30a4\u30eb\uff08<code>&lt;video&gt;<\/code>\u5185\u306e\u753b\u50cfURL\u306b\u8a2d\u5b9a\u3055\u308c\u305fposter\u5c5e\u6027\uff09<\/li>\n<li>\u80cc\u666f\u753b\u50cf\u3092\u6301\u3064\u8981\u7d20\uff08\u901a\u5e38\u306fCSS\u306e<code>background-image url()<\/code>\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u8aad\u307f\u8fbc\u307e\u308c\u308b\uff09<\/li>\n<li>\u30c6\u30ad\u30b9\u30c8\u3092\u542b\u3080\u30d6\u30ed\u30c3\u30af\u30ec\u30d9\u30eb\u8981\u7d20<\/li>\n<\/ul>\n<p>\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u3092\u958b\u59cb2.5\u79d2\u4ee5\u5185\u306bLCP\u304c\u5b8c\u4e86\u3059\u308b\u30da\u30fc\u30b8\u3067\u306f\u3001GOOD\uff08\u7dd1\uff09\u30014.0\u79d2\u3092\u8d85\u3048\u308b\u5834\u5408\u306fPOOR\uff08\u8d64\uff09\u3068\u5224\u65ad\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_102225\" aria-describedby=\"caption-attachment-102225\" style=\"width: 330px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/lcp-rank.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-102225 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/lcp-rank.png\" alt=\"Largest Contentful Paint\u306e\u30b9\u30b3\u30a2\" width=\"330\" height=\"250\"><\/a><figcaption id=\"caption-attachment-102225\" class=\"wp-caption-text\">Largest Contentful Paint\u306e\u30b9\u30b3\u30a2<\/figcaption><\/figure>\n<h3>LCP\u89e3\u6790\u30c4\u30fc\u30eb<\/h3>\n<p>LCP\u306f\u3001Core Web Vital\u306e\u6307\u6a19\u306e\u4e2d\u3067\u6700\u3082\u7406\u89e3\u3057\u3084\u3059\u3044\u3082\u306e\u3067\u3059\u304c\u3001\u3069\u306e\u8981\u7d20\u3067\u5206\u6790\u3059\u308c\u3070\u3044\u3044\u306e\u304b\u308f\u304b\u3089\u306a\u3044\u3053\u3068\u3082\u3002<\/p>\n<p>Google\u63d0\u4f9b\u306e\u7121\u6599\u30c4\u30fc\u30eb\u300c<strong>Lighthouse<\/strong>\u300d\u306f\u3001Chrome\u306e\u4ed6\u3001Edge\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/brave-browser-review\/\">Brave<\/a>\u3001Opera\u3001Vivaldi\u306a\u3069\u306eChromium\u30d9\u30fc\u30b9\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u30d6\u30e9\u30a6\u30b6\u306e\u30e1\u30cb\u30e5\u30fc\u304b\u3089\u30c7\u30d9\u30ed\u30c3\u30d1\u30fc\u30c4\u30fc\u30eb\u306b\u79fb\u52d5\u3057\u3001Lighthouse\u30bf\u30d6\u306b\u79fb\u52d5\u3059\u308b\u624b\u9806\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001Chrome\u3067\u3042\u308c\u3070\u30e1\u30cb\u30e5\u30fc\u304b\u3089\u300c<strong>\u305d\u306e\u4ed6\u306e\u30c4\u30fc\u30eb<\/strong>\u300d\u3001\u3082\u3057\u304f\u306f\u30b7\u30e7\u30fc\u30c8\u30ab\u30c3\u30c8\u300c<strong>Ctrl | Cmd + Shift + i<\/strong>\u300d\u3001\u307e\u305f\u306f<strong>F12<\/strong>\u3067\u300c<strong>\u30c7\u30d9\u30ed\u30c3\u30d1\u30fc \u30c4\u30fc\u30eb<\/strong>\u300d\u3092\u958b\u304d\u3001\u300c<strong>Lighthouse<\/strong>\u300d\u30bf\u30d6\u306b\u79fb\u52d5\u3057\u307e\u3059\uff08\u53e4\u3044\u3082\u306e\u3067\u306f\u3001Lighthouse\u3067\u306f\u306a\u304f\u300c<strong>Audit<\/strong>\u300d\u3068\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3082\uff09\u3002<\/p>\n<p>\u30e2\u30d0\u30a4\u30eb\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30ec\u30dd\u30fc\u30c8\u3092\u4f5c\u6210\u3057\u3001\u7d50\u679c\u306e\u300c<strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/strong>\u300d\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u300cLargest Contentful Paint\u300d\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u8a73\u7d30\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_102222\" aria-describedby=\"caption-attachment-102222\" style=\"width: 1134px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/devtools-lcp-lighthouse.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-102222 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/devtools-lcp-lighthouse.png\" alt=\"Lighthouse\u306e\u30e2\u30d0\u30a4\u30eb\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30ec\u30dd\u30fc\u30c8\" width=\"1134\" height=\"782\"><\/a><figcaption id=\"caption-attachment-102222\" class=\"wp-caption-text\">Lighthouse\u306e\u30e2\u30d0\u30a4\u30eb\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30ec\u30dd\u30fc\u30c8<\/figcaption><\/figure>\n<p>Chromium\u30d9\u30fc\u30b9\u306e\u30d6\u30e9\u30a6\u30b6\u304c\u5229\u7528\u3067\u304d\u306a\u3044\u5834\u5408\u306b\u306f\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u306e<a href=\"https:\/\/developers.google.com\/speed\/pagespeed\/insights\/\" target=\"_blank\" rel=\"noopener noreferrer\">PageSpeed Insights<\/a>\u3084<a href=\"https:\/\/web.dev\/measure\/\" target=\"_blank\" rel=\"noopener noreferrer\">web.dev Measure<\/a>\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_102228\" aria-describedby=\"caption-attachment-102228\" style=\"width: 737px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/pagespeed-lcp.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-102228 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/pagespeed-lcp.png\" alt=\"PageSpeed Insights\u306eLargest Contentful Paint\u89e3\u6790\" width=\"737\" height=\"758\"><\/a><figcaption id=\"caption-attachment-102228\" class=\"wp-caption-text\">PageSpeed Insights\u306eLargest Contentful Paint\u89e3\u6790<\/figcaption><\/figure>\n<p>\u30c7\u30d9\u30ed\u30c3\u30d1\u30fc\u30c4\u30fc\u30eb\u306e\u300c<strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/strong>\u300d\u30bf\u30d6\u306b\u306f\u3001LCP\u3082\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u958b\u59cb\u3059\u308b\u306b\u306f\u3001\u5186\u5f62\u306e\u300c<strong>\u8a18\u9332<\/strong>\u300d\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u3001\u30da\u30fc\u30b8\u3092\u518d\u8aad\u307f\u8fbc\u307f\u3057\u3066\u304b\u3089\u3001\u300c<strong>\u505c\u6b62<\/strong>\u300d\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001\u30ec\u30dd\u30fc\u30c8\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u300c<strong>\u30bf\u30a4\u30df\u30f3\u30b0<\/strong>\u300d\u30bb\u30af\u30b7\u30e7\u30f3\u306b\u3042\u308b\u300c<strong>LCP<\/strong>\u300d\u30a2\u30a4\u30b3\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u8981\u7d20\u3092\u7279\u5b9a\u3057\u3001\u7d71\u8a08\u306e\u30b5\u30de\u30ea\u30fc\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_102223\" aria-describedby=\"caption-attachment-102223\" style=\"width: 1134px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/devtools-lcp-performance.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-102223 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/devtools-lcp-performance.png\" alt=\"\u30c7\u30d9\u30ed\u30c3\u30d1\u30fc\u30c4\u30fc\u30eb\u306e\u300c\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u300d\u30bf\u30d6\u306eLCP\u6307\u6a19\" width=\"1134\" height=\"783\"><\/a><figcaption id=\"caption-attachment-102223\" class=\"wp-caption-text\">\u30c7\u30d9\u30ed\u30c3\u30d1\u30fc\u30c4\u30fc\u30eb\u306e\u300c\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u300d\u30bf\u30d6\u306eLCP\u6307\u6a19<\/figcaption><\/figure>\n<p>Chrome\u306b\u306f<a href=\"https:\/\/chrome.google.com\/webstore\/detail\/web-vitals\/ahfhijdlegdabablpippeagghigmibma\" target=\"_blank\" rel=\"noopener noreferrer\">Web Vitals\u62e1\u5f35\u6a5f\u80fd<\/a>\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u305d\u306e\u4ed6\u306eChromium\u30d9\u30fc\u30b9\u306e\u30d6\u30e9\u30a6\u30b6\u306b\u3082\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u53ef\u80fd\u3067\u3059\u3002\u3053\u306e\u62e1\u5f35\u6a5f\u80fd\u3092\u6709\u52b9\u306b\u3059\u308b\u3068\u3001\u30a2\u30af\u30bb\u30b9\u3057\u305f\u30b5\u30a4\u30c8\u3054\u3068\u306bCore Web Vitals\u306e\u6307\u6a19\u3092\u8a08\u7b97\u3057\u3001\u305d\u306e\u7d50\u679c\u306b\u5fdc\u3058\u3066\u30a2\u30a4\u30b3\u30f3\u304c\u7dd1\u3001\u30aa\u30ec\u30f3\u30b8\u3001\u307e\u305f\u306f\u8d64\u306b\u5909\u5316\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u62e1\u5f35\u6a5f\u80fd\u306e\u30a2\u30a4\u30b3\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001LCP\u306e\u8a73\u7d30\u60c5\u5831\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_102219\" aria-describedby=\"caption-attachment-102219\" style=\"width: 767px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/addon-lcp.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-102219 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/addon-lcp.png\" alt=\"Web Vitals\u306eLCP\u60c5\u5831\" width=\"767\" height=\"407\"><\/a><figcaption id=\"caption-attachment-102219\" class=\"wp-caption-text\">Web Vitals\u306eLCP\u60c5\u5831<\/figcaption><\/figure>\n<p><a href=\"https:\/\/kinsta.com\/jp\/blog\/google-search-console\/\">Google Search Console<\/a>\u3067\u306f\u3001\u30b5\u30a4\u30c8\u304c<a href=\"https:\/\/kinsta.com\/jp\/blog\/google-site-verification\/\">\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u3057\u3066\u8ffd\u52a0<\/a>\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001<a href=\"https:\/\/search.google.com\/search-console\/core-web-vitals\" target=\"_blank\" rel=\"noopener noreferrer\">Core Web Vitals\u30bb\u30af\u30b7\u30e7\u30f3<\/a>\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30ec\u30dd\u30fc\u30c8\u3067\u306f\u3001CWV\u306e\u6307\u6a19\u304c\u3069\u306e\u3088\u3046\u306b\u5909\u5316\u3057\u3066\u304d\u305f\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u306a\u304a\u3001\u7279\u5b9a\u306e\u30da\u30fc\u30b8\u306eLCP\u3067\u306f\u306a\u304f\u3001\u3042\u308b\u7a0b\u5ea6\u306e\u30a2\u30af\u30bb\u30b9\u6570\u304c\u3042\u308b\u30b5\u30a4\u30c8\u306e\u307f\u304c\u5bfe\u8c61\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_102221\" aria-describedby=\"caption-attachment-102221\" style=\"width: 1026px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/console-lcp.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-102221 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/console-lcp.png\" alt=\"Google Search Console Core Web Vitals\" width=\"1026\" height=\"508\"><\/a><figcaption id=\"caption-attachment-102221\" class=\"wp-caption-text\">Google Search Console\u5185\u306e\u8868\u793a<\/figcaption><\/figure>\n<p><a href=\"https:\/\/developers.google.com\/web\/tools\/chrome-user-experience-report\/\" target=\"_blank\" rel=\"noopener noreferrer\">Chrome User Experience Report<\/a>\u3067\u306f\u3001\u7279\u5b9a\u306eURL\u3001\u56fd\u3001\u63a5\u7d9a\u3001\u30c7\u30d0\u30a4\u30b9\u3067\u306eLCP\u3092\u542b\u3080\u5b9f\u969b\u306e\u4f7f\u7528\u7d71\u8a08\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Google\u306eBigQuery\u306b\u3088\u308b\u516c\u958b\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u3042\u308b\u305f\u3081\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/cloud-platform-for-developers\/\">Google Cloud Platform<\/a>\u3067\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u767b\u9332\u3068\u652f\u6255\u3044\u60c5\u5831\u306e\u8a2d\u5b9a\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u306a\u304a\u3001\u3053\u306e\u30ec\u30dd\u30fc\u30c8\u304c\u5f79\u7acb\u3064\u306e\u306f\u3001\u30a2\u30af\u30bb\u30b9\u6570\u304c\u305d\u308c\u306a\u308a\u306b\u3042\u308b\u5834\u5408\u306e\u307f\u3067\u3059\u3002<\/p>\n<p><a href=\"https:\/\/github.com\/GoogleChrome\/web-vitals\" target=\"_blank\" rel=\"noopener noreferrer\">web-vitals JavaScript\u30e9\u30a4\u30d6\u30e9\u30ea<\/a>\u306f\u30011kB\u306e\u5c0f\u3055\u306a\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u3001\u672c\u756a\u30b5\u30a4\u30c8\u4e0a\u306e\u5b9f\u969b\u306e\u30e6\u30fc\u30b6\u30fc\u3092\u5bfe\u8c61\u306b\u3057\u3066\u3001LCP\u3092\u306f\u3058\u3081\u3068\u3059\u308bCore Web Vital\u306e\u6307\u6a19\u3092\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002CDN\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3067\u304d\u308b\u305f\u3081\u3001\u4ee5\u4e0b\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3092HTML\u306e<code>&lt;head&gt;<\/code>\u306b\u8cbc\u308a\u4ed8\u308c\u3070OK\u3067\u3059\u3002<\/p>\n<pre><code class=\"language-html\">&lt;!DOCTYPE html&gt;\n&lt;html lang=\"en\"&gt;\n&lt;head&gt;\n&lt;meta charset=\"UTF-8\"&gt;\n&lt;title&gt;My page&lt;\/title&gt;\n&lt;script type=\"module\"&gt;\nimport { getLCP } from 'https:\/\/unpkg.com\/web-vitals?module';\ngetLCP(console.log);\n&lt;\/script&gt;\n<!-- rest of page -->\n<\/code><\/pre>\n<p><code>getLCP()<\/code>\u306f\u975e\u540c\u671f\u95a2\u6570\u3067\u3001LCP\u306e\u30b9\u30b3\u30a2\u304c\u6e2c\u5b9a\u3055\u308c\u305f\u3068\u304d\u306b\u30c8\u30ea\u30ac\u30fc\u3055\u308c\u308b\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u304c\u6e21\u3055\u308c\u307e\u3059\uff08\u305f\u3060\u3057\u3001\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u306e\u30bf\u30d6\u3067\u30da\u30fc\u30b8\u304c\u8aad\u307f\u8fbc\u307e\u308c\u305f\u5834\u5408\u306b\u306f\u30c8\u30ea\u30ac\u30fc\u3055\u308c\u306a\u3044\u3053\u3068\u3082\uff09\u3002\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u5185\u5bb9\u3092\u542b\u3080\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u6e21\u3055\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong><code>name<\/code><\/strong>\uff1a\u6307\u6a19\u540d\uff08\u3053\u3053\u3067\u306f\u300cLCP\u300d\uff09<\/li>\n<li><strong><code>value<\/code><\/strong>\uff1a\u6e2c\u5b9a\u5024<\/li>\n<li><strong><code>id<\/code><\/strong>\uff1a\u305d\u306e\u30da\u30fc\u30b8\u3067\u306e\u6307\u6a19\u3092\u8868\u3059\u4e00\u610f\u306eID<\/li>\n<li><strong><code>delta<\/code><\/strong>\uff1a\u73fe\u5728\u306e\u6e2c\u5b9a\u5024\u3068\u524d\u56de\u306e\u6570\u5024\u306e\u5dee\u5206<\/li>\n<li><strong><code>entries<\/code><\/strong><code><\/code>\uff1a\u5024\u306e\u6e2c\u5b9a\u306b\u4f7f\u7528\u3055\u308c\u308b\u30a8\u30f3\u30c8\u30ea\u306e\u914d\u5217<\/li>\n<\/ul>\n<p>\u4e0a\u8a18\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u51fa\u529b\u3059\u308b\u3082\u306e\u3067\u3059\u304c\u3001\u30c7\u30fc\u30bf\u3092\u30b5\u30fc\u30d0\u30fc\u3084<a href=\"https:\/\/kinsta.com\/blog\/how-to-use-google-analytics\/\">Google \u30a2\u30ca\u30ea\u30c6\u30a3\u30af\u30b9<\/a>\u306b\u9001\u4fe1\u3057\u3066\u5206\u6790\u3059\u308b\u306e\u304c\u8ce2\u660e\u3067\u3059\u3002<\/p>\n<h3>LCP\u306e\u30b9\u30b3\u30a2\u304c\u4f4e\u4e0b\u3059\u308b\u4e3b\u306a\u539f\u56e0<\/h3>\n<p>LCP\u306e\u30b9\u30b3\u30a2\u304c\u4e0b\u304c\u308b\u4e00\u822c\u7684\u306a\u539f\u56e0\u306f\u3001\u30da\u30fc\u30b8\u306e\u8868\u793a\u901f\u5ea6\u304c\u9045\u304f\u3001\u6700\u5927\u30b5\u30a4\u30ba\u306e\u30d6\u30ed\u30c3\u30af\u304c\u7d20\u65e9\u304f\u8868\u793a\u3055\u308c\u306a\u3044\u3053\u3068\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30b5\u30fc\u30d0\u30fc\u306b\u8ca0\u8377\u304c\u304b\u304b\u3063\u3066\u3044\u305f\u308a\u3001\u30da\u30fc\u30b8\u3092\u8868\u793a\u3059\u308b\u306e\u306b\u5fc5\u8981\u306a\u51e6\u7406\u304c\u591a\u3059\u304e\u305f\u308a\u3059\u308b\u305f\u3081\u306b\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u5fdc\u7b54\u304c\u9045\u304f\u306a\u3063\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3002\u305f\u3060\u3057\u3001\u3053\u308c\u306f\u5fc5\u305a\u3057\u3082\u30b5\u30a4\u30c8\u81ea\u4f53\u306b\u554f\u984c\u304c\u3042\u308b\u3068\u3044\u3046\u308f\u3051\u3067\u306f\u306a\u304f\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/cheap-wordpress-hosting\/\">\u5171\u7528\u30b5\u30fc\u30d0\u30fc<\/a>\u3092\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u5236\u7d04\u304c\u539f\u56e0\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u3082\u3042\u308b\u3002<\/li>\n<li>CSS\u3084JavaScript\u304c\u4e3b\u8981\u30b3\u30f3\u30c6\u30f3\u30c4\u3088\u308a\u4e0a\u306eHTML\u3067\u53c2\u7167\u3055\u308c\u3066\u3044\u308b\u3068\u3001\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u30d6\u30ed\u30c3\u30af\u306b\u3088\u3063\u3066\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u304c\u9045\u5ef6\u3059\u308b\u3053\u3068\u3082\u3002<\/li>\n<li>\u5927\u304d\u306a\u753b\u50cf\u3084<a href=\"https:\/\/kinsta.com\/blog\/embed-youtube-video-wordpress\/\">\u52d5\u753b<\/a>\u306a\u3069\u306f\u5e2f\u57df\u5e45\u3092\u6d88\u8cbb\u3057\u3001\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306b\u6642\u9593\u304c\u304b\u304b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002<\/li>\n<li>\u30b5\u30fc\u30d0\u30fc\u3067\u306f\u306a\u304f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u3067\u751f\u6210\u3055\u308c\u305f\u30da\u30fc\u30b8\u30b3\u30f3\u30c6\u30f3\u30c4\u3082\u8868\u793a\u306b\u6642\u9593\u304c\u304b\u304b\u308b\u3053\u3068\u304c\u3042\u308b\u3002<\/li>\n<\/ul>\n<h3>LCP\u3092\u5411\u4e0a\u3055\u305b\u308b\u65b9\u6cd5<\/h3>\n<p>\u5fb9\u5e95\u7684\u306b\u76e3\u67fb\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u554f\u984c\u306e\u539f\u56e0\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u57fa\u672c\u7684\u306b\u306f<a href=\"https:\/\/kinsta.com\/jp\/cheat-sheets\/site-speed-cheat-sheet\/\">\u30d6\u30e9\u30a6\u30b6\u306b\u9001\u4fe1\u3055\u308c\u308b\u30c7\u30fc\u30bf\u91cf<\/a>\u3092\u6e1b\u3089\u3059\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u30d2\u30f3\u30c8\u3092\u53d6\u308a\u5165\u308c\u3066\u3001LCP\u306e\u30b9\u30b3\u30a2\u3092\u6539\u5584\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ol>\n<li><a href=\"https:\/\/kinsta.com\/jp\/wordpress-hosting\/\">\u30b5\u30fc\u30d0\u30fc\u3084\u30b5\u30fc\u30d0\u30fc\u30b5\u30fc\u30d3\u30b9\u3092\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9<\/a>\u3059\u308b\u3002\u5e2f\u57df\u5e45\u306e\u4f7f\u7528\u91cf\u304c\u5897\u3048\u3066\u3082\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u901f\u5ea6\u3092\u9ad8\u901f\u306b\u4fdd\u3066\u308b\u3088\u3046\u306b\u3059\u308b\u3002<\/li>\n<li>\u30b5\u30fc\u30d0\u30fc\u5727\u7e2e\u3068HTTP\/2\u4ee5\u4e0a\u3092\u4f7f\u7528\u3059\u308b\u3002<\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/learn\/speed-up-wordpress\/\">\u30b5\u30fc\u30d0\u30fc\u306e\u8ca0\u8377<\/a>\u3092\u6e1b\u3089\u3059\u3002\u672a\u4f7f\u7528\u306e\u30b3\u30fc\u30c9\u3084CMS\u30d7\u30e9\u30b0\u30a4\u30f3\u306f\u524a\u9664\u3057\u3066\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/wordpress-cache\/\">\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u4f7f\u7528<\/a>\u3059\u308b\u3002<\/li>\n<li>\u30d6\u30e9\u30a6\u30b6\u304c\u52b9\u7387\u7684\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3059\u308b\u3002HTTP\u30d8\u30c3\u30c0\u30fc\u306b\u9069\u5207\u306a<a href=\"http:\/\/www.w3.org\/Protocols\/rfc2616\/rfc2616-sec14.html#sec14.21\" target=\"_blank\" rel=\"noopener noreferrer\">Expires<\/a>\u3001<a href=\"http:\/\/www.w3.org\/Protocols\/rfc2616\/rfc2616-sec14.html#sec14.29\" target=\"_blank\" rel=\"noopener noreferrer\">Last-Modified<\/a>\u3001<a href=\"http:\/\/en.wikipedia.org\/wiki\/HTTP_ETag\">ETag<\/a>\u3092\u8a2d\u5b9a\u3057\u3066\u3001\u30d5\u30a1\u30a4\u30eb\u304c\u518d\u5ea6\u30ea\u30af\u30a8\u30b9\u30c8\u3055\u308c\u308b\u306e\u3092\u56de\u907f\u3002<\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/wordpress-cdn\/\">\u30b3\u30f3\u30c6\u30f3\u30c4\u30c7\u30ea\u30d0\u30ea\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08CDN\uff09<\/a>\u3067\u8ca0\u8377\u3092\u5206\u6563\u3057\u3001\u7269\u7406\u7684\u306b\u30e6\u30fc\u30b6\u30fc\u306b\u8fd1\u3044\u30b5\u30fc\u30d0\u30fc\u3067\u30a2\u30bb\u30c3\u30c8\u3092\u914d\u4fe1\u3059\u308b\u3002<\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/mykinsta\/\">MyKinsta<\/a>\u5185\u8535\u306e<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/wordpress-cdn\/kinsta-cdn\/#code-minification-1\">\u30b3\u30fc\u30c9\u5727\u7e2e<\/a>\u3067\u5168\u4f53\u7684\u306b\u6700\u9069\u5316\u3092\u56f3\u308b\u3002<\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/optimize-images-for-web\/\">\u753b\u50cf\u3092\u6700\u9069\u5316<\/a>\u3059\u308b\u3002\u6700\u5c0f\u30b5\u30a4\u30ba\u306b\u7e2e\u5c0f\u3057\u3001\u9069\u5207\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u6700\u5927\u9650\u5c0f\u3055\u304f\u3059\u308b\u3002\u6700\u5927\u30b5\u30a4\u30ba\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u30d6\u30ed\u30c3\u30af\u306b\u3042\u308b\u753b\u50cf\u306f\u3001\u3067\u304d\u308b\u3060\u3051\u65e9\u3044\u6bb5\u968e\u3067\u30ea\u30af\u30a8\u30b9\u30c8\u3059\u308b\u3088\u3046\u306b\u3059\u308b\uff08<a href=\"https:\/\/developer.mozilla.org\/docs\/Web\/HTML\/Preloading_content\" target=\"_blank\" rel=\"noopener noreferrer\">\u30d7\u30ea\u30ed\u30fc\u30c9<\/a>\u304c\u52b9\u679c\u7684\uff09\u3002<\/li>\n<li><code>loading=\"lazy\"<\/code>\u5c5e\u6027\u3092\u8ffd\u52a0\u3057\u3066\u3001\u753b\u50cf\u3092\u9045\u5ef6\u8aad\u307f\u8fbc\u307f\u3059\u308b\u3002\u753b\u50cf\u306e\u8aad\u307f\u8fbc\u307f\u304c\u5b8c\u4e86\u3059\u308b\u524d\u306b\u3001\u30da\u30fc\u30b8\u4e0a\u306b\u9069\u5207\u306a\u30b9\u30da\u30fc\u30b9\u304c\u78ba\u4fdd\u3055\u308c\u308b\u3088\u3046\u3001width\u5c5e\u6027\u3068height\u5c5e\u6027\u3092\u8a2d\u5b9a\u3059\u308b\u3002<\/li>\n<li>\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3001\u4e0d\u5fc5\u8981\u306aDNS\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u907f\u3051\u308b\u305f\u3081\u3001\u30a2\u30bb\u30c3\u30c8\u3092\u30d7\u30e9\u30a4\u30de\u30ea\u30c9\u30e1\u30a4\u30f3\u306b\u79fb\u3059\u3053\u3068\u3082\u691c\u8a0e\u3002<\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/make-fewer-http-requests\/\">\u8981\u6c42\u3055\u308c\u308b\u30d5\u30a1\u30a4\u30eb\u6570\u3068\u30b5\u30a4\u30ba<\/a>\u306f\u3001\u7279\u306bHTML\u306e\u5148\u982d\u3067\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3002<\/li>\n<li>\u5fc5\u8981\u306a\u30a6\u30a7\u30d6\u30d5\u30a9\u30f3\u30c8\u306e\u307f\u3092\u8aad\u307f\u8fbc\u3080\u3002\u307e\u305f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u5927\u5316\u3092\u8003\u616e\u3057\u3066\u3001<a href=\"https:\/\/kinsta.com\/blog\/html-fonts\/\">\u30a6\u30a7\u30d6\u30bb\u30fc\u30d5\u30d5\u30a9\u30f3\u30c8<\/a>\u306b\u5909\u66f4\u3059\u308b\u3002<\/li>\n<li>\u672a\u4f7f\u7528\u306eJavaScript\u3068CSS\u30d5\u30a1\u30a4\u30eb\u3092\u524a\u9664\u3059\u308b\u3002<\/li>\n<li>JavaScript\u3068CSS\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u7d50\u5408\u3057\u3066\u6700\u5c0f\u5316\u3059\u308b\u3002<\/li>\n<li>CSS\u306e@import\u69cb\u6587\u306f\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u30d6\u30ed\u30c3\u30af\u3092\u5f15\u304d\u8d77\u3053\u3057\u3001\u30b9\u30bf\u30a4\u30eb\u3092\u9023\u7d9a\u3057\u3066\u8aad\u307f\u8fbc\u3080\u305f\u3081\u56de\u907f\u3059\u308b\u3002<\/li>\n<li>Base64\u30a8\u30f3\u30b3\u30fc\u30c9\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u304c\u5927\u304d\u304f\u306a\u308a\u3001\u8ffd\u52a0\u306e\u51e6\u7406\u304c\u5fc5\u8981\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u907f\u3051\u308b\u3002<\/li>\n<li>\u30af\u30ea\u30c6\u30a3\u30ab\u30ebCSS\u306e\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\u3002\u30da\u30fc\u30b8\u4e0a\u90e8\u306e<code>&lt;link&gt;<\/code>\u30d6\u30ed\u30c3\u30af\u306b\u30af\u30ea\u30c6\u30a3\u30ab\u30ebCSS\uff08Above the fold\u306b\u5fc5\u8981\u306a\u3082\u306e\uff09\u3092\u57cb\u3081\u8fbc\u307f\u3001\u30b9\u30bf\u30a4\u30eb\u30b7\u30fc\u30c8\u3092\u975e\u540c\u671f\u3067\u8aad\u307f\u8fbc\u3080\u3002<\/li>\n<li>\u975e\u540c\u671f\u3001\u9045\u5ef6\u3001\u307e\u305f\u306fES modules\uff08JavaScript\u30e2\u30b8\u30e5\u30fc\u30eb\uff09\u3092\u4f7f\u7528\u3057\u3066\u3001\u5f8c\u3067\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u5b9f\u884c\u3002Service Worker\u3067\u6642\u9593\u306e\u304b\u304b\u308bJavaScript\u30d7\u30ed\u30bb\u30b9\u3092\u5b9f\u884c\u3059\u308b\u3002<\/li>\n<\/ol>\n<h2>First Input Delay\uff08FID\uff09<\/h2>\n<p>First Input Delay\uff08\u65e5\u672c\u8a9e\u3067\u300c\u521d\u56de\u5165\u529b\u307e\u3067\u306e\u9045\u5ef6\u6642\u9593\u300d\uff09\u306f\u3001\u30da\u30fc\u30b8\u306e\u5fdc\u7b54\u6027\u3092\u6e2c\u5b9a\u3057\u307e\u3059\u3002\u30af\u30ea\u30c3\u30af\u3084\u30bf\u30c3\u30d7\u3001\u30b9\u30af\u30ed\u30fc\u30eb\u306a\u3069\u306e\u30e6\u30fc\u30b6\u30fc\u5074\u306e\u64cd\u4f5c\u306b\u5bfe\u3057\u3066\u3001\u3069\u308c\u3060\u3051\u7d20\u65e9\u304f\u53cd\u5fdc\u3059\u308b\u304b\u3092\u8abf\u3079\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>FID\u306f\u30e6\u30fc\u30b6\u30fc\u3068\u306e\u5bfe\u8a71\u304b\u3089\u30d6\u30e9\u30a6\u30b6\u304c\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u51e6\u7406\u3059\u308b\u307e\u3067\u306e\u6642\u9593\u3092\u6e2c\u5b9a\u3057\u307e\u3059\u3002\u306a\u304a\u3001\u5165\u529b\u51e6\u7406\u3068DOM\u306e\u66f4\u65b0\u3092\u884c\u3046\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u306e\u5b9f\u884c\u6642\u9593\u306f\u8a08\u6e2c\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n<p>F100\u30df\u30ea\u79d2\u4ee5\u4e0b\u306e\u30da\u30fc\u30b8\u306fGOOD\uff08\u7dd1\uff09\u3001300\u30df\u30ea\u79d2\u3092\u8d85\u3048\u308b\u30da\u30fc\u30b8\u306fPOOR\uff08\u8d64\uff09\u3068\u5224\u65ad\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_102224\" aria-describedby=\"caption-attachment-102224\" style=\"width: 330px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/fid-rank.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-102224 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/fid-rank.png\" alt=\"First Input Delay\u306e\u30b9\u30b3\u30a2\" width=\"330\" height=\"250\"><\/a><figcaption id=\"caption-attachment-102224\" class=\"wp-caption-text\">First Input Delay\u306e\u30b9\u30b3\u30a2<\/figcaption><\/figure>\n<h3>FID\u89e3\u6790\u30c4\u30fc\u30eb<\/h3>\n<p>First Input Delay\u306f\u3001\u8a2a\u554f\u8005\u304c\u5b9f\u969b\u306b\u30da\u30fc\u30b8\u3092\u64cd\u4f5c\u3057\u305f\u3068\u304d\u306b\u3057\u304b\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u305a\u3001\u518d\u73fe\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u7d50\u679c\u306f\u5404\u30c7\u30d0\u30a4\u30b9\u306eCPU\u306e\u901f\u5ea6\u3068\u6a5f\u80fd\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002<\/p>\n<p>FID\u306e\u5834\u5408\u3001\u958b\u767a\u8005\u30c4\u30fc\u30eb\u306eLighthouse\u3084<a href=\"https:\/\/developers.google.com\/speed\/pagespeed\/insights\/\">PageSpeed Insights<\/a>\u3067\u306f\u8a08\u6e2c\u3067\u304d\u307e\u305b\u3093\u304c\u3001FID\u306e\u8fd1\u4f3c\u5024\u3092\u793a\u3059\u5408\u8a08\u30d6\u30ed\u30c3\u30af\u6642\u9593\uff08TBT\uff09\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002TBT\u306f\u4ee5\u4e0b\u306e\u6642\u9593\u306e\u5dee\u3092\u8a08\u7b97\u3057\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<ol>\n<li>FCP\uff08First Contentful Paint\uff09\u2500\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3092\u958b\u59cb\u3059\u308b\u6642\u9593<\/li>\n<li>TTI\uff08Time to Interactive\uff09\u2500\u30da\u30fc\u30b8\u304c\u30e6\u30fc\u30b6\u30fc\u306e\u5165\u529b\u64cd\u4f5c\u306b\u5fdc\u7b54\u3067\u304d\u308b\u307e\u3067\u306e\u6642\u9593\uff08\u9577\u6642\u9593\u5b9f\u884c\u3059\u308b\u30bf\u30b9\u30af\u304c\u306a\u304f\u3001HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u304c3\u3064\u672a\u6e80\u3067\u3042\u308b\u5834\u5408\u306b\u63a8\u5b9a\uff09<\/li>\n<\/ol>\n<figure id=\"attachment_102227\" aria-describedby=\"caption-attachment-102227\" style=\"width: 738px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/pagespeed-fid.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-102227 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/pagespeed-fid.png\" alt=\"PageSpeed Insights\u306e\u5408\u8a08\u30d6\u30ed\u30c3\u30af\u6642\u9593\" width=\"738\" height=\"595\"><\/a><figcaption id=\"caption-attachment-102227\" class=\"wp-caption-text\">PageSpeed Insights\u306e\u5408\u8a08\u30d6\u30ed\u30c3\u30af\u6642\u9593<\/figcaption><\/figure>\n<p>Chrome\u306e\u62e1\u5f35\u6a5f\u80fd<a href=\"https:\/\/chrome.google.com\/webstore\/detail\/web-vitals\/ahfhijdlegdabablpippeagghigmibma\">Web Vitals<\/a>\u3067\u306f\u3001\u30b9\u30af\u30ed\u30fc\u30eb\u3084\u30af\u30ea\u30c3\u30af\u3067\u30da\u30fc\u30b8\u3092\u64cd\u4f5c\u3057\u305f\u5f8c\u306bFID\u6307\u6a19\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002\u62e1\u5f35\u6a5f\u80fd\u306e\u30a2\u30a4\u30b3\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001\u8a73\u7d30\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_102218\" aria-describedby=\"caption-attachment-102218\" style=\"width: 575px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/addon-fid.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-102218 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/addon-fid.png\" alt=\"Web Vitals\u306eFID\u6307\u6a19\" width=\"575\" height=\"402\"><\/a><figcaption id=\"caption-attachment-102218\" class=\"wp-caption-text\">Web Vitals\u306eFID\u6307\u6a19<\/figcaption><\/figure>\n<p><a href=\"https:\/\/docs.google.com\/document\/d\/1vAP3ex3G8vfeAmIkT-6Rdchvdv_7mQy3-P5EnXPLiI8\/edit#heading=h.7fow01wzb9wj\">LCP<\/a>\u3068\u540c\u69d8\u306b\u3001<a href=\"https:\/\/developers.google.com\/web\/tools\/chrome-user-experience-report\/\">Chrome User Experience Report<\/a>\u3067\u3001\u7279\u5b9a\u306eURL\u3084\u56fd\u3001\u63a5\u7d9a\u3001\u30c7\u30d0\u30a4\u30b9\u3067\u8a18\u9332\u3055\u308c\u305f\u5b9f\u969b\u306e\u7d71\u8a08\u60c5\u5831\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/github.com\/GoogleChrome\/web-vitals\">web-vitals JavaScript\u30e9\u30a4\u30d6\u30e9\u30ea<\/a>\u306f\u3001\u672c\u756a\u30b5\u30a4\u30c8\u4e0a\u306e\u5b9f\u969b\u306e\u30e6\u30fc\u30b6\u30fc\u306eFID\u6307\u6a19\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3092HTML\u306e<code>&lt;head&gt;<\/code>\u306b\u8ffd\u52a0\u3057\u3001FID\u3092\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306b\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-html\">&lt;!DOCTYPE html&gt;\n&lt;html lang=\"en\"&gt;\n&lt;head&gt;\n&lt;meta charset=\"UTF-8\"&gt;\n&lt;title&gt;My page&lt;\/title&gt;\n&lt;script type=\"module\"&gt;\nimport { getFID } from 'https:\/\/unpkg.com\/web-vitals?module';\ngetFID(console.log);\n&lt;\/script&gt;\n<!-- rest of page -->\n<\/code><\/pre>\n<h3>FID\u306e\u30b9\u30b3\u30a2\u304c\u4f4e\u4e0b\u3059\u308b\u4e3b\u306a\u539f\u56e0<\/h3>\n<p>FID\u304a\u3088\u3073TBT\u306e\u30b9\u30b3\u30a2\u304c\u4e0b\u304c\u308b\u4e00\u822c\u7684\u306a\u539f\u56e0\u306f\u3001CPU\u3092\u5360\u6709\u3059\u308b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u30b3\u30fc\u30c9\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30b3\u30fc\u30c9\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3068\u89e3\u6790\u306b\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u3092\u505c\u6b62\u3055\u305b\u3001\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u30d6\u30ed\u30c3\u30af\u3068\u306a\u308b\u5927\u91cf\u306eCSS\u3084JavaScript<\/li>\n<li>\u30da\u30fc\u30b8\u8aad\u307f\u8fbc\u307f\u6642\u306b\u5373\u5ea7\u306b\u5b9f\u884c\u3055\u308c\u308b\u5927\u304d\u304f\u51e6\u7406\u8ca0\u8377\u306e\u9ad8\u3044\u30b9\u30af\u30ea\u30d7\u30c8<\/li>\n<li>\u9577\u6642\u9593\u306b\u308f\u305f\u3063\u3066\u5b9f\u884c\u3055\u308c\u308b\u3001\u307e\u305f\u306f\u6700\u9069\u5316\u3055\u308c\u3066\u3044\u306a\u3044JavaScript\u51e6\u7406<\/li>\n<\/ul>\n<p>\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001\u30d6\u30e9\u30a6\u30b6\u306f1\u3064\u306e\u30b9\u30ec\u30c3\u30c9\u3067\u52d5\u4f5c\u3057\u3001\u4e00\u5ea6\u306b1\u3064\u306e\u30bf\u30b9\u30af\u3057\u304b\u51e6\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u3064\u307e\u308a\u3001JavaScript\u306e\u95a2\u6570\u306e\u5b9f\u884c\u306b1\u79d2\u304b\u304b\u308b\u3068\u3001\u305d\u306e1\u79d2\u306e\u9593\u306b\u306f\u4ed6\u306e\u3059\u3079\u3066\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u51e6\u7406\u304c\u505c\u6b62\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u30da\u30fc\u30b8\u304c\u30e6\u30fc\u30b6\u30fc\u306e\u5165\u529b\u64cd\u4f5c\u306b\u5fdc\u7b54\u3057\u305f\u308a\u3001DOM\u3092\u66f4\u65b0\u3057\u305f\u308a\u3001\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u8868\u793a\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u305a\u3001\u53e4\u3044\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u3001GIF\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3082\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>FID\u3092\u6539\u5584\u3059\u308b\u65b9\u6cd5<\/h3>\n<p>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306eJavaScript\u3092\u76e3\u67fb\u3057\u3066\u554f\u984c\u3092\u7279\u5b9a\u3059\u308b\u306e\u304c\u78ba\u5b9f\u3067\u3059\u304c\u3001\u57fa\u672c\u7684\u306b\u306f\u3001\u5197\u9577\u306a\u30b3\u30fc\u30c9\u3092\u524a\u9664\u3057\u3001\u52b9\u7387\u7684\u306b\u51e6\u7406\u304c\u5b9f\u884c\u3055\u308c\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u304c\u9375\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>FID\u306e\u30b9\u30b3\u30a2\u3092\u6539\u5584\u3059\u308b\u65b9\u6cd5\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u3067\u304d\u308b\u9650\u308a\u306e\u9759\u7684\u306aHTML\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u30b5\u30fc\u30d0\u30fc\u4e0a\u3067<a href=\"https:\/\/kinsta.com\/jp\/blog\/wordpress-cache\/\">\u751f\u6210\u3057\u3066\u30ad\u30e3\u30c3\u30b7\u30e5<\/a>\u3059\u308b\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b5\u30a4\u30c9\u306eJavaScript\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u983c\u3089\u305a\u3001\u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u5bfe\u3057\u3066\u540c\u3058HTML\u3092\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u3088\u3046\u306b\u3059\u308b\u3002<\/li>\n<li>\u30d6\u30e9\u30a6\u30b6\u304c\u52b9\u7387\u7684\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3059\u308b\u3002HTTP\u30d8\u30c3\u30c0\u30fc\u306b\u9069\u5207\u306a<a href=\"http:\/\/www.w3.org\/Protocols\/rfc2616\/rfc2616-sec14.html#sec14.21\" target=\"_blank\" rel=\"noopener noreferrer\">Expires<\/a>\u3001<a href=\"http:\/\/www.w3.org\/Protocols\/rfc2616\/rfc2616-sec14.html#sec14.29\" target=\"_blank\" rel=\"noopener noreferrer\">Last-Modified<\/a>\u3001<a href=\"http:\/\/en.wikipedia.org\/wiki\/HTTP_ETag\">ETag<\/a>\u3092\u8a2d\u5b9a\u3057\u3066\u3001\u30d5\u30a1\u30a4\u30eb\u304c\u518d\u5ea6\u30ea\u30af\u30a8\u30b9\u30c8\u3055\u308c\u308b\u306e\u3092\u56de\u907f\u3002<\/li>\n<li>\u30d7\u30ed\u30b0\u30ec\u30c3\u30b7\u30d6\u30a8\u30f3\u30cf\u30f3\u30b9\u30e1\u30f3\u30c8\u6280\u8853\u3092\u4f7f\u7528\u3057\u3066\u3001JavaScript\u5b9f\u884c\u524d\u306bHTML\u3068CSS\u3067\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3002<\/li>\n<li>\u672a\u4f7f\u7528\u306eJavaScript\u3084CSS\u30d5\u30a1\u30a4\u30eb\u3092\u524a\u9664\u3059\u308b\u3002<\/li>\n<li>JavaScript\u3068CSS\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u7d50\u5408\u3057\u3066\u5727\u7e2e\u3059\u308b\u3002<\/li>\n<li>box-shadow\u3084filter\u306a\u3069\u306e\u9ad8\u5ea6\u306aCSS\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u904e\u5ea6\u306b\u4f7f\u7528\u3057\u306a\u3044\u3002<\/li>\n<li>\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u5f8c\u3067\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u3001\u975e\u540c\u671f\u3001\u9045\u5ef6\u3001\u307e\u305f\u306fES modules\uff08JavaScript\u30e2\u30b8\u30e5\u30fc\u30eb\uff09\u3092\u4f7f\u7528\u3059\u308b\u3002<\/li>\n<li>\u5206\u6790\u3001SNS\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u3001\u610f\u898b\u4ea4\u63db\u30d5\u30a9\u30fc\u30e9\u30e0\u306a\u3069\u3001\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u304b\u3089\u306eJavaScript\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u3001\u3059\u3050\u306b\u6570\u30e1\u30ac\u30d0\u30a4\u30c8\u307e\u3067\u81a8\u308c\u4e0a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u6700\u5c0f\u9650\u306b\u7559\u3081\u308b\u3002<\/li>\n<li>\u30c1\u30e3\u30c3\u30c8\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u3084\u52d5\u753b\u518d\u751f\u306a\u3069\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066JavaScript\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u9045\u5ef6\u8aad\u307f\u8fbc\u307f\u3059\u308b\u3002<\/li>\n<li>\u5206\u6790\u3001\u5e83\u544a\u3001SNS\u30c4\u30fc\u30eb\u306a\u3069\u3001\u91cd\u8981\u5ea6\u306e\u4f4e\u3044\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u8aad\u307f\u8fbc\u307f\u3092\u9045\u3089\u305b\u308b\u3002<\/li>\n<li>\u9577\u6642\u9593\u5b9f\u884c\u3055\u308c\u308bJavaScript\u51e6\u7406\u3092\u4e00\u9023\u306e\u5c0f\u3055\u306a\u30b8\u30e7\u30d6\u306b\u5206\u5272\u3057\u3001\u77ed\u3044<a href=\"https:\/\/developer.mozilla.org\/docs\/Web\/API\/Window\/requestIdleCallback\" target=\"_blank\" rel=\"noopener noreferrer\">requestIdleCallback<\/a>\u3001<a href=\"https:\/\/developer.mozilla.org\/docs\/Web\/API\/WindowOrWorkerGlobalScope\/setTimeout\" target=\"_blank\" rel=\"noopener noreferrer\">setTimeout<\/a>\u3001<a href=\"https:\/\/developer.mozilla.org\/docs\/Web\/API\/window\/requestAnimationFrame\" target=\"_blank\" rel=\"noopener noreferrer\">requestAnimationFrame<\/a>\u3092\u9045\u5ef6\u3055\u305b\u305f\u5f8c\u306b\u5b9f\u884c\u3059\u308b\u3002<\/li>\n<li>\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u306e\u30b9\u30ec\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b<a href=\"https:\/\/developer.mozilla.org\/docs\/Web\/API\/Web_Workers_API\/Using_web_workers\" target=\"_blank\" rel=\"noopener noreferrer\">\u30a6\u30a7\u30d6\u30ef\u30fc\u30ab\u30fc<\/a>\u3067\u3001\u6642\u9593\u306e\u304b\u304b\u308bJavaScript\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3092\u691c\u8a0e\u3059\u308b\u3002<\/li>\n<\/ol>\n<h2>Cumulative Layout Shift\uff08CLS\uff09<\/h2>\n<p>Cumulative Layout Shift\uff08\u65e5\u672c\u8a9e\u3067\u300c\u7d2f\u7a4d\u30ec\u30a4\u30a2\u30a6\u30c8\u30b7\u30d5\u30c8\u300d\uff09\u306f\u3001\u30da\u30fc\u30b8\u306e\u8996\u899a\u7684\u306a\u5b89\u5b9a\u6027\u3092\u6e2c\u5b9a\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u7279\u306b\u6700\u521d\u306e\u8aad\u307f\u8fbc\u307f\u6642\u306b\u3001\u3069\u308c\u3060\u3051\u30da\u30fc\u30b8\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u610f\u56f3\u305b\u305a\u52d5\u3044\u305f\u308a\u3001\u305a\u308c\u305f\u308a\u3059\u308b\u304b\u3092\u6570\u5024\u5316\u3057\u307e\u3059\u3002<\/p>\n<p>CLS\u306f\u3001\u8b66\u544a\u3084\u30e6\u30fc\u30b6\u30fc\u30a4\u30f3\u30bf\u30e9\u30af\u30b7\u30e7\u30f3\u306a\u3057\u306b\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u52d5\u304f\u5834\u5408\u306b\u8a08\u6e2c\u3055\u308c\u307e\u3059\u3002\u30e2\u30d0\u30a4\u30eb\u7aef\u672b\u3067\u8a18\u4e8b\u3092\u8aad\u3093\u3067\u3044\u308b\u3068\u3001\u7a81\u7136\u30c6\u30ad\u30b9\u30c8\u304c\u753b\u9762\u5916\u306b\u306f\u307f\u51fa\u3057\u3066\u3001\u3069\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u95b2\u89a7\u3057\u3066\u3044\u308b\u304b\u308f\u304b\u3089\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3063\u305f\u3001\u3068\u3044\u3046\u7d4c\u9a13\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u305a\u308c\u306b\u3088\u3063\u3066\u3001\u8aa4\u3063\u305f\u30ea\u30f3\u30af\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u3057\u307e\u3046\u3068\u3044\u3046\u306e\u306f\u6700\u60aa\u306e\u4f8b\u3067\u3059\u3002<\/p>\n<p>CLS\u306e\u554f\u984c\u3068\u3057\u3066\u3001\u30b9\u30af\u30ed\u30fc\u30eb\u4f4d\u7f6e\u3088\u308a\u4e0a\u306b\u5927\u304d\u306a\u753b\u50cf\u3084\u5e83\u544a\u304c\u8aad\u307f\u8fbc\u307e\u308c\u3001\u6025\u306b\u6570\u767e\u30d4\u30af\u30bb\u30eb\u306e\u305a\u308c\u304c\u751f\u3058\u308b\u3068\u3044\u3063\u305f\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>CLS\u306e\u30b9\u30b3\u30a2\u306f\u3001\u4ee5\u4e0b\u306e\u6307\u6a19\u3092\u639b\u3051\u5408\u308f\u305b\u3066\u7b97\u51fa\u3055\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30a4\u30f3\u30d1\u30af\u30c8\u4fc2\u6570<\/strong>\u2500\u30d3\u30e5\u30fc\u30dd\u30fc\u30c8\u5185\u306e\u3059\u3079\u3066\u306e\u4e0d\u5b89\u5b9a\u306a\u8981\u7d20\u3001\u3064\u307e\u308a\u305a\u308c\u308b\u8981\u7d20\u306e\u7dcf\u9762\u7a4d\u3092\u793a\u3057\u307e\u3059\u300260\uff05\u3092\u5360\u3081\u308b\u8981\u7d20\u304c\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u4e2d\u306b\u305a\u308c\u308b\u5834\u5408\u3001\u30a4\u30f3\u30d1\u30af\u30c8\u4fc2\u6570\u306f0.6\u306b\u306a\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u305a\u308c\u3092\u5f15\u304d\u8d77\u3053\u3057\u305f\u753b\u50cf\u3084\u5e83\u544a\u306a\u3069\u306e\u8981\u7d20\u306f\u3001\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u5f8c\u306b\u52d5\u304b\u306a\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u300c\u5b89\u5b9a\u3057\u3066\u3044\u308b\u300d\u3068\u307f\u306a\u3055\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u8ddd\u96e2\u4fc2\u6570<\/strong>\u2500\u30d3\u30e5\u30fc\u30dd\u30fc\u30c8\u5185\u306e\u5358\u4e00\u306e\u4e0d\u5b89\u5b9a\u306a\u8981\u7d20\u304c\u79fb\u52d5\u3057\u305f\u6700\u5927\u306e\u8ddd\u96e2\u3092\u793a\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u6700\u5927\u306e\u5909\u4f4d\u304c0,100\u304b\u30890,800\u3078\u306e\u79fb\u52d5\u3067\u3042\u308b\u5834\u5408\u3001\u7e26700\u30d4\u30af\u30bb\u30eb\u5206\u8981\u7d20\u304c\u79fb\u52d5\u3057\u305f\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u30c7\u30d0\u30a4\u30b9\u306e\u30d3\u30e5\u30fc\u30dd\u30fc\u30c8\u306e\u9ad8\u3055\u304c1,000 px\u306e\u5834\u5408\u3001\u8ddd\u96e2\u306e\u5272\u5408\u306f700px \/ 1000px = 0.7\u3068\u306a\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u4e0a\u8a18\u306e\u4f8b\u3068\u639b\u3051\u5408\u308f\u305b\u308b\u3068\u3001\u3053\u306e\u5834\u5408\u306eCLS\u30b9\u30b3\u30a2\u306f\u30010.6 x 0.7 = 0.42\u3068\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>Google\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u72b6\u6cc1\u306b\u5bfe\u3059\u308b\u7b56\u3068\u3057\u3066CLS\u306e\u6307\u6a19\u3092\u5909\u66f4\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u305a\u308c\uff08\u30ec\u30a4\u30a2\u30a6\u30c8\u30b7\u30d5\u30c8\uff09\u306f5\u79d2\u9593\u306e\u300c\u30bb\u30c3\u30b7\u30e7\u30f3\u300d\u306b\u307e\u3068\u3081\u3089\u308c\u3001\u305d\u308c\u4ee5\u4e0a\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u306a\u3051\u308c\u30701\u79d2\u5f8c\u306b\u7d42\u4e86\u30021\u79d2\u4ee5\u5185\u306b2\u3064\u4ee5\u4e0a\u306e\u8981\u7d20\u304c\u52d5\u3044\u305f\u5834\u5408\u306f\u3001\u305d\u306e\u30b9\u30b3\u30a2\u304c\u52a0\u7b97\u3055\u308c\u308b\u3002<\/li>\n<li>\u30ec\u30a4\u30a2\u30a6\u30c8\u30b7\u30d5\u30c8\u306f\u3001\u30af\u30ea\u30c3\u30af\u306a\u3069\u306e\u30e6\u30fc\u30b6\u30fc\u30a4\u30f3\u30bf\u30e9\u30af\u30b7\u30e7\u30f3\u306e\u5f8c\u3001500\u30df\u30ea\u79d2\u306f\u8a18\u9332\u3055\u308c\u306a\u3044\u3002\u3053\u308c\u304cDOM\u66f4\u65b0\u306e\u30c8\u30ea\u30ac\u30fc\u306b\u306a\u308b\u3053\u3068\u3082\u3042\u308b\uff08\u30e1\u30cb\u30e5\u30fc\u3092\u958b\u304f\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8868\u793a\u3059\u308b\u3001\u30e2\u30fc\u30c0\u30eb\u30c0\u30a4\u30a2\u30ed\u30b0\u3092\u8868\u793a\u3059\u308b\u306a\u3069\uff09\u3002<\/li>\n<li>\u9577\u6642\u9593\u3001\u958b\u3044\u305f\u72b6\u614b\u306e\u307e\u307e\u3067\u3001\u591a\u304f\u306eDOM\u66f4\u65b0\u3092\u884c\u3046\u30b7\u30f3\u30b0\u30eb\u30da\u30fc\u30b8\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u60aa\u5f71\u97ff\u3092\u53d7\u3051\u306a\u3044\u3002<\/li>\n<\/ul>\n<p>CLS\u30b9\u30b3\u30a2\u304c0.1\u4ee5\u4e0b\u306e\u30da\u30fc\u30b8\u306f\u3001GOOD\uff08\u7dd1\uff09\u3068\u5224\u65ad\u3055\u308c\u307e\u3059\u30020.25\u3092\u8d85\u3048\u308b\u30da\u30fc\u30b8\u306fPOOR\uff08\u8d64\uff09\u3068\u5224\u65ad\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_102220\" aria-describedby=\"caption-attachment-102220\" style=\"width: 330px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/cls-rank.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-102220 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/cls-rank.png\" alt=\"Cumulative Layout Shift\u306e\u30b9\u30b3\u30a2\" width=\"330\" height=\"250\"><\/a><figcaption id=\"caption-attachment-102220\" class=\"wp-caption-text\">Cumulative Layout Shift\u306e\u30b9\u30b3\u30a2<\/figcaption><\/figure>\n<h3>CLS\u89e3\u6790\u30c4\u30fc\u30eb<\/h3>\n<p>CLS\u306f\u3001\u30c7\u30d9\u30ed\u30c3\u30d1\u30fc\u30c4\u30fc\u30eb\u306e\u300c<strong>Lighthouse<\/strong>\u300d\u30d1\u30cd\u30eb\u3001<a href=\"https:\/\/developers.google.com\/speed\/pagespeed\/insights\/\" target=\"_blank\" rel=\"noopener noreferrer\">PageSpeed Insights<\/a>\u3001<a href=\"https:\/\/web.dev\/measure\/\" target=\"_blank\" rel=\"noopener noreferrer\">web.dev Measure<\/a>\u3067\u6e2c\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_102226\" aria-describedby=\"caption-attachment-102226\" style=\"width: 738px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/pagespeed-cls.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-102226 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/pagespeed-cls.png\" alt=\"PageSpeed Insights\u306eCLS\u6307\u6a19\" width=\"738\" height=\"813\"><\/a><figcaption id=\"caption-attachment-102226\" class=\"wp-caption-text\">PageSpeed Insights\u306eCLS<\/figcaption><\/figure>\n<p>\u307e\u305f\u3001Chrome\u306e\u62e1\u5f35\u6a5f\u80fd<a href=\"https:\/\/chrome.google.com\/webstore\/detail\/web-vitals\/ahfhijdlegdabablpippeagghigmibma\">Web Vitals<\/a>\u3067\u3082\u3001CLS\u306e\u6307\u6a19\u3092\u78ba\u8a8d\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_102217\" aria-describedby=\"caption-attachment-102217\" style=\"width: 573px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/addon-cls.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-102217 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2021\/08\/addon-cls.png\" alt=\"Web Vitals\u306eCLS\u6307\u6a19\" width=\"573\" height=\"395\"><\/a><figcaption id=\"caption-attachment-102217\" class=\"wp-caption-text\">Web Vitals\u306eCLS<\/figcaption><\/figure>\n<p><a href=\"https:\/\/docs.google.com\/document\/d\/1vAP3ex3G8vfeAmIkT-6Rdchvdv_7mQy3-P5EnXPLiI8\/edit#heading=h.7fow01wzb9wj\" target=\"_blank\" rel=\"noopener noreferrer\">LCP<\/a>\u3084<a href=\"https:\/\/docs.google.com\/document\/d\/1vAP3ex3G8vfeAmIkT-6Rdchvdv_7mQy3-P5EnXPLiI8\/edit#heading=h.unhz54otledn\" target=\"_blank\" rel=\"noopener noreferrer\">FID<\/a>\u3068\u540c\u3058\u3088\u3046\u306b\u3001<a href=\"https:\/\/developers.google.com\/web\/tools\/chrome-user-experience-report\/\" target=\"_blank\" rel=\"noopener noreferrer\">Chrome User Experience Report<\/a>\u3067\u3001\u7279\u5b9a\u306eURL\u3001\u56fd\u3001\u63a5\u7d9a\u3001\u30c7\u30d0\u30a4\u30b9\u3067\u8a18\u9332\u3055\u308c\u305f\u5b9f\u969b\u306e\u7d71\u8a08\u60c5\u5831\u3082\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u540c\u69d8\u306b\u3001<a href=\"https:\/\/github.com\/GoogleChrome\/web-vitals\" target=\"_blank\" rel=\"noopener noreferrer\">web-vitals JavaScript\u30e9\u30a4\u30d6\u30e9\u30ea<\/a>\u306f\u3001\u672c\u756a\u30b5\u30a4\u30c8\u4e0a\u306e\u5b9f\u969b\u306e\u30e6\u30fc\u30b6\u30fc\u306eCLS\u6307\u6a19\u3092\u8a08\u7b97\u53ef\u80fd\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3092HTML\u306e<code>&lt;head&gt;<\/code>\u306b\u8ffd\u52a0\u3057\u3066\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u306b\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-html\">&lt;!DOCTYPE html&gt;\n&lt;html lang=\"en\"&gt;\n&lt;head&gt;\n&lt;meta charset=\"UTF-8\"&gt;\n&lt;title&gt;My page&lt;\/title&gt;\n&lt;script type=\"module\"&gt;\nimport { getCLS } from 'https:\/\/unpkg.com\/web-vitals?module';\ngetCLS(console.log);\n&lt;\/script&gt;\n<!-- rest of page -->\n<\/code><\/pre>\n<h3>CLS\u306e\u30b9\u30b3\u30a2\u304c\u4f4e\u4e0b\u3059\u308b\u4e3b\u306a\u539f\u56e0<\/h3>\n<p>CLS\u306e\u30b9\u30b3\u30a2\u306f\u3001\u30da\u30fc\u30b8\u30a2\u30bb\u30c3\u30c8\u306e\u8aad\u307f\u8fbc\u307f\u304c\u9045\u3044\u3001DOM\u8981\u7d20\u304c\u52d5\u7684\u307e\u305f\u306f\u30b5\u30a4\u30ba\u4e0d\u8db3\u3067\u3042\u308b\u3053\u3068\u304c\u539f\u56e0\u3067\u4f4e\u4e0b\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u30da\u30fc\u30b8\u4e0a\u306b\u3001\u753b\u50cf\u3001iframe\u3001\u5e83\u544a\u306b\u5fc5\u8981\u306a\u30b9\u30da\u30fc\u30b9\u304c\u78ba\u4fdd\u3055\u308c\u3066\u3044\u306a\u3044\u3002<\/li>\n<li>\u30b3\u30f3\u30c6\u30f3\u30c4\u304cDOM\u306b\u52d5\u7684\u306b\u6ce8\u5165\u3055\u308c\u3066\u3044\u308b\uff08\u5178\u578b\u7684\u306a\u4f8b\u3068\u3057\u3066\u306f\u3001\u5e83\u544a\u3084SNS\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u306a\u3069\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u5f8c\uff09\u3002<\/li>\n<li>\u30a6\u30a7\u30d6\u30d5\u30a9\u30f3\u30c8\u306e\u8aad\u307f\u8fbc\u307f\u304c\u3001FOIT\uff08Flash of Invisible Text: \u30c6\u30ad\u30b9\u30c8\u304c\u4e00\u77ac\u8868\u793a\u3055\u308c\u306a\u3044\uff09\u3084FOUT\uff08Flash of Unstyled Text: \u30c6\u30ad\u30b9\u30c8\u304c\u4e00\u77ac\u4ee3\u66ff\u30d5\u30a9\u30f3\u30c8\u3067\u8868\u793a\u3055\u308c\u308b\uff09\u3092\u5f15\u304d\u8d77\u3053\u3057\u3066\u3044\u308b\u3002<\/li>\n<\/ul>\n<h3>CLS\u3092\u6539\u5584\u3059\u308b\u65b9\u6cd5<\/h3>\n<p>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b5\u30a4\u30c9\u306e\u76e3\u67fb\u3067\u554f\u984c\u3092\u7279\u5b9a\u3067\u304d\u307e\u3059\u304c\u3001\u4e00\u822c\u7684\u306b\u306f\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u524d\u306b\u8981\u7d20\u306e\u30b9\u30da\u30fc\u30b9\u3092\u78ba\u4fdd\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<a href=\"https:\/\/docs.google.com\/document\/d\/1vAP3ex3G8vfeAmIkT-6Rdchvdv_7mQy3-P5EnXPLiI8\/edit#heading=h.tmx1h3p2bgp8\" target=\"_blank\" rel=\"noopener noreferrer\">LCP\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u63d0\u6848\u3057\u305f\u30b5\u30fc\u30d0\u30fc\u6700\u9069\u5316\u306e\u30d2\u30f3\u30c8<\/a>\u3092\u53d6\u308a\u5165\u308c\u308c\u3070\u3001\u3042\u308b\u7a0b\u5ea6\u306e\u6539\u5584\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u304c\u3001\u52a0\u3048\u3066\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5bfe\u7b56\u3082\u52b9\u679c\u7684\u3067\u3059\u3002<\/p>\n<ol>\n<li>HTML\u306e<code>&lt;img&gt;<\/code>\u3068<code>&lt;iframe&gt;<\/code> \u30bf\u30b0\u306b\u5e45\u3068\u9ad8\u3055\u306e\u5c5e\u6027\u3092\u8ffd\u52a0\u3059\u308b\u304b\u3001<a href=\"https:\/\/developer.mozilla.org\/docs\/Web\/CSS\/aspect-ratio\" target=\"_blank\" rel=\"noopener noreferrer\">CSS\u306easpect-ratio\u30d7\u30ed\u30d1\u30c6\u30a3<\/a>\u3092\u4f7f\u3063\u3066\u3001\u30a2\u30bb\u30c3\u30c8\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u524d\u306b\u30da\u30fc\u30b8\u4e0a\u306b\u9069\u5207\u306a\u30b9\u30da\u30fc\u30b9\u3092\u78ba\u4fdd\u3059\u308b\u3002<\/li>\n<li>\u5e83\u544a\u3084\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u306a\u3069\u3001\u8aad\u307f\u8fbc\u307f\u306e\u9045\u3044\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30fc\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u56f2\u3080\u30b3\u30f3\u30c6\u30ca\u8981\u7d20\u306b\u306f\u3001\u3042\u3089\u304b\u3058\u3081\u9069\u5207\u306a\u5bf8\u6cd5\u3092\u8a2d\u5b9a\u3059\u308b\u3002<\/li>\n<li>\u30da\u30fc\u30b8\u306e\u4e0a\u90e8\u306b\u8868\u793a\u3055\u308c\u308b\u753b\u50cf\u3084\u305d\u306e\u4ed6\u306e\u30a2\u30bb\u30c3\u30c8\u306f\u3001\u3067\u304d\u308b\u3060\u3051\u65e9\u3044\u6bb5\u968e\u3067\u30ea\u30af\u30a8\u30b9\u30c8\u3059\u308b\uff08<a href=\"https:\/\/developer.mozilla.org\/docs\/Web\/HTML\/Preloading_content\" target=\"_blank\" rel=\"noopener noreferrer\">\u30d7\u30ea\u30ed\u30fc\u30c9<\/a>\u304c\u52b9\u679c\u7684\uff09\u3002<\/li>\n<li>\u30a6\u30a7\u30d6\u30d5\u30a9\u30f3\u30c8\u306e\u4f7f\u7528\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3001\u4e00\u822c\u7684\u306b\u5165\u624b\u53ef\u80fd\u306aOS\u30d5\u30a9\u30f3\u30c8\u306e\u63a1\u7528\u3092\u691c\u8a0e\u3059\u308b\u3002<\/li>\n<li>\u30a6\u30a7\u30d6\u30d5\u30a9\u30f3\u30c8\u3092\u8aad\u307f\u8fbc\u307f\u3001<a href=\"https:\/\/developer.mozilla.org\/docs\/Web\/CSS\/@font-face\/font-display\" target=\"_blank\" rel=\"noopener noreferrer\">CSS\u306efont-display<\/a>\u3092\u30aa\u30d7\u30b7\u30e7\u30f3\u307e\u305f\u306f\u30b9\u30ef\u30c3\u30d7\u306b\u8a2d\u5b9a\u3002<a href=\"https:\/\/meowni.ca\/font-style-matcher\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u985e\u4f3c\u30b5\u30a4\u30ba\u306e\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u30d5\u30a9\u30f3\u30c8<\/a>\u3092\u4f7f\u7528\u3057\u3066\u3001\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u305a\u308c\u3092\u6700\u5c0f\u9650\u306b\u3059\u308b\u3002<\/li>\n<li>\u30af\u30ea\u30c3\u30af\u306a\u3069\u306e\u64cd\u4f5c\u306b\u5bfe\u5fdc\u3059\u308b\u5834\u5408\u3092\u9664\u3044\u3066\u3001\u30da\u30fc\u30b8\u4e0a\u90e8\u3078\u306e\u8981\u7d20\u306e\u633f\u5165\u306f\u907f\u3051\u308b\u3002<\/li>\n<li>\u5165\u529b\u30c8\u30ea\u30ac\u30fc\u304b\u3089500\u30df\u30ea\u79d2\u4ee5\u5185\u306b\u30e6\u30fc\u30b6\u30fc\u30a4\u30f3\u30bf\u30e9\u30af\u30b7\u30e7\u30f3\u304c\u5b8c\u4e86\u3059\u308b\u3088\u3046\u306b\u3059\u308b\u3002<\/li>\n<li>CSS\u306etransform\u3068opacity\u3092\u4f7f\u7528\u3057\u3066\u3001\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u6700\u9069\u5316\u3057\u3001\u518d\u30ec\u30a4\u30a2\u30a6\u30c8\u3092\u884c\u308f\u306a\u3044\u3002<\/li>\n<li>\u30af\u30ea\u30c6\u30a3\u30ab\u30ebCSS\u3092\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\u3059\u308b\u3002\u30da\u30fc\u30b8\u4e0a\u90e8\u306e<code>&lt;link&gt;<\/code>\u30d6\u30ed\u30c3\u30af\u306b\u30af\u30ea\u30c6\u30a3\u30ab\u30ebCSS\u3092\u57cb\u3081\u8fbc\u307f\u3001\u975e\u540c\u671f\u3067\u30b9\u30bf\u30a4\u30eb\u30b7\u30fc\u30c8\u3092\u8aad\u307f\u8fbc\u3080\u3002<\/li>\n<li>\u30da\u30fc\u30b8\u306e\u4efb\u610f\u306e\u30b5\u30d6\u30c4\u30ea\u30fc\u3092\u7279\u5b9a\u3067\u304d\u308bCSS\u306e\u65b0\u6a5f\u80fd<a href=\"https:\/\/developer.mozilla.org\/docs\/Web\/CSS\/CSS_Containment\">containment<\/a>\uff08\u5c01\u3058\u8fbc\u3081\uff09\u306e\u4f7f\u7528\u3092\u691c\u8a0e\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u3063\u3066\u3001\u7279\u5b9a\u306eDOM\u30b3\u30f3\u30c6\u30f3\u30c4\u30d6\u30ed\u30c3\u30af\u3092\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\uff08\u307e\u305f\u306f\u3057\u306a\u3044\uff09\u3053\u3068\u3067\u3001\u30d6\u30e9\u30a6\u30b6\u304c\u51e6\u7406\u3092\u6700\u9069\u5316\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/li>\n<\/ol>\n\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u4e2d\u306b\u306f\u3001\u4f55\u304b\u3089\u4f55\u307e\u3067Google\u306e\u63a8\u5968\u306b\u5fe0\u5b9f\u306b\u5f93\u3046\u3053\u3068\u306b\u5bfe\u3057\u3066\u3001\u61a4\u308a\u3092\u611f\u3058\u3066\u3044\u308b\u65b9\u3082\u3044\u308b\u3067\u3057\u3087\u3046\u3002\u3057\u304b\u3057\u3001Googe\u306f\u4eca\u65e5\u5927\u304d\u306a\u5f71\u97ff\u529b\u3092\u6301\u3063\u3066\u304a\u308a\u3001\u3061\u3087\u3063\u3068\u3057\u305f\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u306e\u66f4\u65b0\u304c\u3001\u30a6\u30a7\u30d6\u30d9\u30fc\u30b9\u306e\u4f01\u696d\u306e\u751f\u7523\u6027\u3084\u53ce\u76ca\u6027\u306b\u60aa\u5f71\u97ff\u3092\u53ca\u307c\u3059\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>Google\u306eCore Web Vitals\u306f\u3001\u98f4\u3068\u97ad\u3067\u3044\u3046\u3068\u3053\u308d\u306e\u300c\u98f4\u300d\u306b\u3042\u305f\u308a\u307e\u3059\u3002\u8cea\u306e\u4f4e\u3044\u30e2\u30d0\u30a4\u30ebUI\u3001\u30dd\u30c3\u30d7\u30a2\u30c3\u30d7\u8981\u7d20\u306e\u591a\u3044\u80a5\u5927\u5316\u3057\u305f\u30b5\u30a4\u30c8\u3088\u308a\u3082\u3001\u6700\u9069\u5316\u3055\u308c\u3066\u4f7f\u3044\u3084\u3059\u304f\u3001\u30c0\u30fc\u30af\u30d1\u30bf\u30fc\u30f3\uff08\u30e6\u30fc\u30b6\u30fc\u3092\u9a19\u3059\u76ee\u7684\u3067\u8a2d\u8a08\u3055\u308c\u305fUI\uff09\u3092\u6392\u9664\u3057\u305f\u30b5\u30a4\u30c8\u306e\u65b9\u304c\u6210\u529f\u3059\u308b\u78ba\u7387\u304c\u9ad8\u304f\u306a\u308b\u306e\u306f\u5f53\u7136\u3068\u3082\u8a00\u3048\u307e\u3059\u3002<\/p>\n<p>Core Web Vitals\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u3092\u8a55\u4fa1\u3059\u308b\u305f\u3081\u306e\u6307\u6a19\u3068\u306a\u308a\u3001\u91cd\u8981\u306a\u6539\u5584\u70b9\u3092\u7279\u5b9a\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u6539\u5584\u3059\u308c\u3070\u5fc5\u305a\u53ce\u76ca\u304c\u30a2\u30c3\u30d7\u3059\u308b\u3068\u3044\u3046\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u8a2a\u554f\u8005\u306f\u3088\u308a\u5feb\u9069\u306b\u30b5\u30a4\u30c8\u3092\u95b2\u89a7\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u4fe1\u983c\u6027\u306e\u5411\u4e0a\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n<p>Core Web Vitals\u306e\u6539\u5584\u306b\u3064\u3044\u3066\u3001\u4ed6\u306b\u3082\u4f55\u304b\u5bfe\u7b56\u3084\u30d2\u30f3\u30c8\u3092\u3054\u5b58\u77e5\u3067\u3059\u304b\uff1f\u4ee5\u4e0b\u306e\u30b3\u30e1\u30f3\u30c8\u6b04\u3067\u305c\u3072\u304a\u805e\u304b\u305b\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Google\u306f\u3001Core Web Vitals\u306b\u5f93\u3063 &#8230;<\/p>\n","protected":false},"author":188,"featured_media":43634,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[106,199],"topic":[805,835,811],"class_list":["post-43633","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","tag-google","tag-performance","topic-seo-strategy","topic-wordpress-seo","topic-user-experience"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Core Web Vitals\u306b\u5bfe\u5fdc\u3057\u305f\u6700\u9069\u5316\u3068\u6539\u5584\u65b9\u6cd5\uff5cKinsta\u00ae<\/title>\n<meta name=\"description\" content=\"Google\u306eCore Web Vitals\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u8a55\u4fa1\u3059\u308b\u6307\u6a19\u306b\u306a\u308a\u307e\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u306f\u691c\u7d22\u9806\u4f4d\u306b\u5f71\u97ff\u3059\u308b\u3053\u3068\u304b\u3089\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u306f\u7121\u8996\u3067\u304d\u307e\u305b\u3093\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kinsta.com\/jp\/blog\/core-web-vitals\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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